{"title":"Chart Plotting Instrument","description":"","products":[{"product_id":"plotter-bi-rola-breton-style","title":"Plotter - Bi Rola (Breton Style)","description":"\u003cp\u003eA simple robust plotter ideal for use in the cockpit or in the classroom.\u003c\/p\u003e","brand":"Boat books Australia","offers":[{"title":"Default Title","offer_id":52955091042668,"sku":"N619","price":29.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0946\/1920\/5996\/files\/product-image.png?v=1772604991"},{"product_id":"dividers-bow-175mm","title":"Dividers - Bow - 175MM","description":"Blundell Harling single handed brass divider with stainless steel points. Length 175mm\u003cbr\u003e\u003cbr\u003e \u003cbr\u003e\u003cbr\u003eSKU: N283","brand":"Boat books Australia","offers":[{"title":"Default Title","offer_id":52955783790956,"sku":"N283","price":32.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0946\/1920\/5996\/files\/N283-1.jpg?v=1764755740"},{"product_id":"dividers-bow-200mm-2","title":"Dividers - Bow - 200Mm","description":"\u003cp\u003eBlundell Harling single handed brass divider with stainless steel points. Length 200mm\u003c\/p\u003e","brand":"Boat books Australia","offers":[{"title":"Default Title","offer_id":52955791786348,"sku":"N284","price":34.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0946\/1920\/5996\/files\/N284.jpg?v=1764755759"},{"product_id":"parallel-rule-captain-fields-15","title":"Parallel Rule - Captain Fields 15\"","description":"Weems \u0026amp; Plath 15-inch (381mm) Brushed Aluminum Arm Parallel Rule\u003cbr\u003e\u003cbr\u003eThis sturdy acrylic parallel rule includes a protractor scale, is easy to use, and is a necessary tool for every seagoing navigator.\u003cbr\u003e\u003cbr\u003eThe two straight-edged rules are connected to maintain the same angle. By walking the rules across the chart and securely holding down the non-moving rule, you can effectively plot a course.\u003cbr\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e15-inches (381mm) long\u003c\/li\u003e\n\u003cli\u003eBrushed aluminum arms\u003c\/li\u003e\n\u003cli\u003ePolished aluminum handle\u003c\/li\u003e\n\u003cli\u003eMilled acrylic with beveled edges\u003c\/li\u003e\n\u003cli\u003eIncludes protractor scale\u003c\/li\u003e\n\u003cli\u003eProtective plastic sleeve\u003c\/li\u003e\n\u003c\/ul\u003e\u003cbr\u003eSKU: N516","brand":"Boat books Australia","offers":[{"title":"Default Title","offer_id":52955812397420,"sku":"N516","price":45.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0946\/1920\/5996\/files\/Weems-Plath-Parallel-Rule-15-captain-fields-e1750030778516.jpg?v=1764755801"},{"product_id":"parallel-rule-captain-fields-500mm","title":"Parallel Rule - Captain Fields 500mm","description":"Traditional parallel rule with Captain Fields pattern protractor markings. Nickle plated brass links, 500mm length.\u003cbr\u003e\u003cul\u003e\n\u003cli\u003eDivided with protractor markings (double reading) and compass points\u003c\/li\u003e\n\u003cli\u003eManufactured from high quality 6mm acrylic\u003c\/li\u003e\n\u003cli\u003eBevelled on all four edges with solid brass links\u003c\/li\u003e\n\u003cli\u003eAll other metallic parts are manufactured from non-corrosive materials\u003c\/li\u003e\n\u003cli\u003eRubber pads are fitted to the underside to prevent slipping\u003c\/li\u003e\n\u003c\/ul\u003e\u003cbr\u003eSKU: N477","brand":"Boat books Australia","offers":[{"title":"Default Title","offer_id":52955824718188,"sku":"N477","price":165.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0946\/1920\/5996\/files\/parallel-rule-500mm-e1746586920374.webp?v=1764755834"},{"product_id":"parallel-rule-plain-15","title":"Parallel Rule - Plain 15-inch","description":"Weems and Plath plain parallel rule. Length 380mm.\u003cbr\u003e\u003cbr\u003eTraditional parallel rulers, the 15-inch Brushed Aluminum Arm Parallel Ruler is the best seller. This sturdy acrylic parallel ruler is easy to use and is a necessary tool for every seagoing navigator.\u003cbr\u003e\u003cul\u003e\n\u003cli\u003eBrushed aluminum arms\u003c\/li\u003e\n\u003cli\u003ePolished aluminum handles\u003c\/li\u003e\n\u003cli\u003eMilled with bevelled edges\u003c\/li\u003e\n\u003cli\u003eIncludes protractor scale\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cstrong\u003eDimensions: \u003c\/strong\u003e1\/4\" (6 mm) thickness; 15\" (381 mm) length\u003cbr\u003e\u003cbr\u003eSKU: N517","brand":"Boat books Australia","offers":[{"title":"Default Title","offer_id":52955831304556,"sku":"N517","price":35.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0946\/1920\/5996\/files\/products-N517.jpg?v=1764755849"},{"product_id":"portland-course-plotter","title":"Portland Course Plotter","description":"Provides a quick method of plotting courses and bearings and gives a direct reading of corrections for magnetic variation.\u003cbr\u003e\u003cul\u003e\n\u003cli\u003eUsed worldwide by practical and shore-based instructors\u003c\/li\u003e\n\u003cli\u003eBright blue directional arrow prevents accidental reciprocal bearings\u003c\/li\u003e\n\u003cli\u003eEdges are graduated for tide and boat speed\u003c\/li\u003e\n\u003cli\u003eBase has a fixed grid, so it is easy to plot latitude from your GPS system\u003c\/li\u003e\n\u003cli\u003eComprehensive instructions included\u003c\/li\u003e\n\u003c\/ul\u003e\u003cbr\u003eSKU: N649\u003cbr\u003e\u003cbr\u003e \u003cbr\u003e\u003cbr\u003eThe Portland Course Plotter, often referred to as a nautical protractor, is an essential tool for mariners navigating at sea. It plays a vital role in accurate chart plotting, which is a fundamental aspect of maritime navigation. The plotter is specifically designed to measure angles and courses on nautical charts, enabling mariners to determine their vessel’s heading with precision. By using the Portland Course Plotter, navigators can calculate the direction a ship needs to travel in relation to the Earth’s geographical coordinates.\u003cbr\u003e\u003cbr\u003eFeatures include:\u003cbr\u003e\u003cul\u003e\n\u003cli\u003ePrinted by hand.\u003c\/li\u003e\n\u003cli\u003eMoulded base with domed feet for easy of movement across a sea chart.\u003c\/li\u003e\n\u003cli\u003eMoulded compass disc with raised fins for easy rotation – even with cold hands or gloves.\u003c\/li\u003e\n\u003cli\u003eBrass pivot is lubricated with silicon grease for smooth operation.\u003c\/li\u003e\n\u003cli\u003eEvery plotter is checked for accuracy during assembly.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cbr\u003eOne of the key functions of the Portland Course Plotter is to help determine a vessel’s true heading, meaning the direction relative to true north as opposed to magnetic north. This is crucial for maintaining navigational accuracy, especially in regions where magnetic variation may cause compass errors. With the plotter, mariners can correct for these variations and ensure their course is accurately plotted on the chart.\u003cbr\u003e\u003cbr\u003eThe tool works by aligning its straight edge with the intended course on the chart. Once aligned, the mariner uses the compass rose, which is commonly found on nautical charts, to read off the angle or direction. This angle, given in degrees, indicates the course that the vessel needs to follow. The Portland Course Plotter can also be used to measure bearings, the distance between two points, and the position relative to navigational landmarks. This makes it a versatile and invaluable tool for those plotting courses manually on a nautical chart.\u003cbr\u003e\u003cbr\u003eDespite the widespread use of electronic navigation systems, the Portland Course Plotter remains a vital instrument, particularly as a backup during system failures or in situations where manual navigation is preferred. It offers navigators a simple yet highly effective way to ensure a safe passage through coastal waters or across open seas.","brand":"Boat books Australia","offers":[{"title":"Default Title","offer_id":52955838546284,"sku":"N649","price":49.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0946\/1920\/5996\/files\/products-N649.jpg?v=1764755863"},{"product_id":"triangle","title":"Triangle 200mm","description":"Weems \u0026amp; Plath\u003cbr\u003e\u003cbr\u003eThis triangle is inscribed with black markings.\u003cbr\u003e\u003cbr\u003eUsing two 45° triangles provides an easy method of plotting and performing chart work.\u003cbr\u003e\u003cbr\u003eWith its protractor scales, the triangle is easily aligned in any direction with a chart meridian.\u003cbr\u003e\u003cbr\u003eDirection is maintained as one triangle is slid along the other to the desired position.\u003cbr\u003e\u003cbr\u003eDurable, clear vinylite. Short sides 7-1\/2\", .08\" thick, (one per pack). 200mm\u003cbr\u003e\u003cbr\u003eSKU: N697","brand":"Boat books Australia","offers":[{"title":"Default Title","offer_id":52955847360876,"sku":"N697","price":25.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0946\/1920\/5996\/files\/products-N697.jpg?v=1764755880"},{"product_id":"triangle-200mm","title":"Portland Navigation Triangle - 200mm","description":"200mm Portland navigational triangle with handle.\u003cbr\u003e\u003cul\u003e\n\u003cli\u003eFeatures protractor markings and compass points with reciprocals in red\u003c\/li\u003e\n\u003cli\u003eScale in millimetres\u003c\/li\u003e\n\u003cli\u003eManufactured from strong acrylic\u003c\/li\u003e\n\u003cli\u003eCan be used in pairs as a Parallel Rule\u003c\/li\u003e\n\u003cli\u003eBlundell Harling\u003c\/li\u003e\n\u003c\/ul\u003e\u003cbr\u003eSKU: N699","brand":"Boat books Australia","offers":[{"title":"Default Title","offer_id":52955855978860,"sku":"N699","price":20.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0946\/1920\/5996\/files\/Portland-navigation-triangle-200mm-e1746592338290.webp?v=1764755895"},{"product_id":"parallel-rule-captain-fields-12","title":"Parallel Rule - Captain Fields 12\"","description":"Parallel Ruler 12\" Brushed Aluminum Arms\u003cbr\u003e\u003cbr\u003e12 inch length, 0.22 inch thickness, aluminum arms and handles.\u003cbr\u003e\u003cbr\u003eSKU: N510","brand":"Boat books Australia","offers":[{"title":"Default Title","offer_id":52956114354540,"sku":"N510","price":39.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0946\/1920\/5996\/files\/Weems-and-Plath-12inch-parallel-rule-cpatains-field.jpg?v=1764759175"},{"product_id":"elegant-navigation-set","title":"Elegant Navigation Set","description":"\u003cp\u003eWe have assembled our finest brass one-hand dividers, our deluxe brass arm parallel rules and now fitted with a 1-3\/4\" liquid filled brass compass in an elegant deep red mahogany finish wooden box that is fitted out with polished brass hardware. The box also accepts a brass plate (not included) suitable for engraving. Dims: 15-3\/4\"l x 3-3\/4\"w x 7\/8\"d.\u003c\/p\u003e","brand":"Boat books Australia","offers":[{"title":"Default Title","offer_id":52956114616684,"sku":"N300","price":295.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0946\/1920\/5996\/files\/products-N300.jpg?v=1764759203"},{"product_id":"triangle-200mm-handle","title":"Protractor Triangle 200mm with Handle","description":"This triangle is inscribed with contrast enhancing colors making it easier to use.\u003cbr\u003e\u003cbr\u003eUsing two 45° triangles provides an easy method of plotting and performing chart work.\u003cbr\u003e\u003cbr\u003eWith its protractor scales, the triangle is easily aligned in any direction with a chart meridian.\u003cbr\u003e\u003cbr\u003eDirection is maintained as one triangle is slid along the other to the desired position.\u003cbr\u003e\u003cbr\u003eDurable, clear vinylite. Short sides 7-1\/2\", .08\" thick, (one per pack).\u003cbr\u003e\u003cbr\u003eSKU: N696","brand":"Boat books Australia","offers":[{"title":"Default Title","offer_id":52956114714988,"sku":"N696","price":25.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0946\/1920\/5996\/files\/products-N696.jpg?v=1764759222"},{"product_id":"speed-time-distance-calculator-2","title":"Speed\/Time\/Distance Calculator","description":"\u003cp\u003eA simple-to-use slide rule device for calculating the third variable given the other two (distance covered, given speed and elapsed time).\u003c\/p\u003e","brand":"Boat books Australia","offers":[{"title":"Default Title","offer_id":52956127199596,"sku":"N880","price":19.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0946\/1920\/5996\/files\/products-N880.jpg?v=1764760249"},{"product_id":"portland-course-plotter-kit","title":"Portland Course Plotter Kit","description":"Kit contains chart plotter and 175mm bow handle divider.\u003cbr\u003e\u003cbr\u003eThe Portland Course Plotter Kit, a vital tool for any navigator, plays a critical role in manual chart plotting at sea. While many mariners rely on electronic navigation, the plotter kit remains an essential backup in the event of system failures or when traditional methods are preferred. It allows navigators to plot courses and bearings on nautical charts with precision, ensuring safe voyages through both coastal and open waters.\u003cbr\u003e\u003ch3\u003eWhat Makes the Portland Course Plotter Kit Unique\u003c\/h3\u003e\u003cbr\u003eOne of the key functions of the kit is helping to establish a vessel’s true heading – the direction relative to true north, rather than magnetic north. This distinction is important because magnetic variation can cause significant compass errors, especially in certain regions. The Portland Course Plotter Kit enables mariners to adjust for these variations, keeping their plotted course accurate.\u003cbr\u003e\u003cbr\u003eCrafted with care, the plotter kit features:\u003cbr\u003e\u003cul\u003e\n\u003cli\u003eA hand-printed design for quality assurance.\u003c\/li\u003e\n\u003cli\u003eA moulded base with domed feet, making it easy to glide over charts.\u003c\/li\u003e\n\u003cli\u003eA compass disc with raised fins, designed for effortless turning even when wearing gloves or dealing with cold conditions.\u003c\/li\u003e\n\u003cli\u003eA brass pivot lubricated with silicone grease to ensure smooth operation.\u003c\/li\u003e\n\u003cli\u003eEach kit is thoroughly tested for accuracy before leaving the workshop.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003ePractical Application of the Plotter Kit\u003c\/h3\u003e\u003cbr\u003eUsing the plotter is simple but highly effective. To plot a course, align the straight edge of the tool with the intended direction on the chart. The next step involves referencing the compass rose, a common feature on nautical charts, to read the angle or direction in degrees. This angle reveals the precise course that the vessel must follow. Beyond this, the Portland Course Plotter Kit is versatile enough to measure bearings, distances between locations, and positions relative to landmarks or navigational aids.\u003cbr\u003e\u003cbr\u003e \u003cbr\u003e\u003cbr\u003eSKU: N648","brand":"Boat books Australia","offers":[{"title":"Default Title","offer_id":52957484286316,"sku":"N648","price":95.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0946\/1920\/5996\/files\/Portland-plotter-kit.webp?v=1764804474"},{"product_id":"douglas-square-protractor-5-130mm","title":"Douglas Square Protractor 5\" 125mm","description":"Portland Navigation Protractor 125mm\/5\"\u003cbr\u003e\u003cbr\u003eDouglas-type square pattern navigational protractor.\u003cbr\u003e\u003cbr\u003eCan also be used as a simple parallel rule and plotter\u003cbr\u003e\u003cbr\u003e \u003cbr\u003e\u003cbr\u003eSKU : N675","brand":"Boat books Australia","offers":[{"title":"Default Title","offer_id":52957496672620,"sku":"N675","price":29.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0946\/1920\/5996\/files\/Douglas-Square-125mm.jpg?v=1764804957"},{"product_id":"douglas-square-protractor-10-250mm","title":"Douglas Square Protractor 10\" 250mm","description":"Portland Protractor 250mm\/10\" Douglas-type square pattern navigational protractor\u003cbr\u003e\u003cbr\u003eCan also be used as a simple parallel rule and plotter\u003cbr\u003e\u003cbr\u003eSKU : N676","brand":"Boat books Australia","offers":[{"title":"Default Title","offer_id":52957496770924,"sku":"N676","price":49.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0946\/1920\/5996\/files\/Portland-Protractor-e1747188782304.webp?v=1764804974"},{"product_id":"bb-pencil-compass-7","title":"Boat Books Brass Pencil Compass 7''","description":"7'' brass pencil compass with stainless steel point with cover\u003cbr\u003e\u003cbr\u003eSKU: N557\u003cbr\u003e\u003cbr\u003e ","brand":"Boat books Australia","offers":[{"title":"Default Title","offer_id":52957588914540,"sku":"N557","price":30.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0946\/1920\/5996\/files\/N557-7in-brass-compass-scaled-e1741736489873.jpg?v=1764808611"},{"product_id":"bb-single-hand-divider-8","title":"BB Single Hand Divider 8\"","description":"\u003cp\u003e8'' brass single hand divider with stainless steel tip.\u003c\/p\u003e","brand":"Boat books Australia","offers":[{"title":"Default Title","offer_id":52957589832044,"sku":"N291","price":30.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0946\/1920\/5996\/files\/N291.jpg?v=1764808631"},{"product_id":"bb-single-hand-divider-7","title":"BB Single Hand Divider 7\"","description":"\u003cp\u003e7\" Brass single hand divider with stainless steel points\u003c\/p\u003e","brand":"Boat books Australia","offers":[{"title":"Default Title","offer_id":52957590323564,"sku":"N290","price":27.5,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0946\/1920\/5996\/files\/N290.jpg?v=1764808646"},{"product_id":"bb-straight-divider-7","title":"BB Straight Divider 7\"","description":"\u003cp\u003e7'' Brass straight divider with stainless steel tips\u003c\/p\u003e","brand":"Boat books Australia","offers":[{"title":"Default Title","offer_id":52957591896428,"sku":"N292","price":27.5,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0946\/1920\/5996\/files\/N292.jpg?v=1764808661"},{"product_id":"bb-straight-divider-8","title":"BB Straight Divider 8\"","description":"\u003cp\u003e8'' Brass straight divider with stainless steel points\u003c\/p\u003e","brand":"Boat books Australia","offers":[{"title":"Default Title","offer_id":52957592158572,"sku":"N293","price":30.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0946\/1920\/5996\/files\/N293.jpg?v=1764808676"},{"product_id":"ultralight-compass-and-divider","title":"Ultralight Compass and Divider","description":"Every proper navigation kit should include a pair of navigation dividers to measure distance on a chart. The Ultralight Dividers are the perfect tools to fill out your kit. They are the best-selling navigation tool in our whole product line for good reason:\u003cbr\u003e•The navigation dividers are fully adjustable and easy to use \u003cbr\u003e•Constructed of coated marine alloy to resist corrosion \u003cbr\u003e•Gear synchronized arms allow one-hand use and provide excellent point alignment while center wheel\/extension bar construction allows for fast action precision adjustments \u003cbr\u003e•Stainless steel points \u003cbr\u003e•Points can be replaced with lead (included) so that it becomes a navigator's compass \u003cbr\u003e•Made in Germany \u003cbr\u003e•Lifetime warranty","brand":"Boat books Australia","offers":[{"title":"Default Title","offer_id":52957778936172,"sku":"N278","price":45.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0946\/1920\/5996\/files\/N278-2.jpg?v=1764811480"},{"product_id":"weems-plath-chart-correction-template-9998","title":"WEEMS \u0026 PLATH - Chart Correction Template #9998","description":"The Chart Correction Template includes stencils for Region A \u0026amp; B IALA Maritime Buoyage symbols that are required for updating and correcting nautical charts. Keeping charts updated ensures the safety of your crew and vessel.  Designed for use with a fine-line pen, corrections to nautical charts can be made neatly and quickly with this simple-to-use stencil.  These corrections then become a permanent part of the chart. Corrections  should  be  made  in  ink  so  they  will  not  be accidentally  erased  when  you  are plotting courses on the chart. Please Reference UK Admiralty Chart 5011 or Australian Publication AHP24 for assistance with symbol identification.\u003cbr\u003eConstructed of durable, flexible plastic\u003cbr\u003e","brand":"Boat books Australia","offers":[{"title":"Default Title","offer_id":52958116970860,"sku":"N916","price":20.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0946\/1920\/5996\/files\/CHART-CORRECTION-TEMPLATE-9998.jpg?v=1764828859"},{"product_id":"mitsubishi-uni-ball-signo-um-151-gel-pen-0-28-mm-violet","title":"Mitsubishi Uni-ball Signo UM-151 Gel Pen - 0.28 mm (violet)","description":"This pen and ink are UKHO approved for chart corrections.\u003cbr\u003e\u003cp class=\"p1\"\u003e\u003cspan class=\"s1\"\u003eThe Signo Gel Grip by uni-ball is a smooth flowing quality gel ink pen. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"p1\"\u003e\u003cspan class=\"s1\"\u003eThe comfortable rubber grip makes for a pleasurable writing experience particularly when using it for extended periods.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"p1\"\u003e\u003cspan class=\"s1\"\u003eThe Signo Gel Grip has a secure clickable cap to prevent leaking. The UM-151s also features a window barrel design so you can see when it is running out. It also features uni Super Ink so you can be sure your writing is water, fade and tamper proof perfect for chart correcting..\u003c\/span\u003e\u003c\/p\u003e","brand":"Boat books Australia","offers":[{"title":"Default Title","offer_id":52958126276972,"sku":"N531","price":10.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0946\/1920\/5996\/files\/mitsubishi-chart-correcting-pen.jpg?v=1764829403"},{"product_id":"boat-books-brass-pencil-compass-8in","title":"Brass Pencil Compass 8in","description":"8'' brass pencil compass with stainless steel point with Boat Books cover\u003cbr\u003e\u003cbr\u003eSKU: N558","brand":"Boat books Australia","offers":[{"title":"Default Title","offer_id":52958655152492,"sku":"N558","price":35.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0946\/1920\/5996\/files\/N558-Brass-compass-8in-scaled-e1741736871331.jpg?v=1764850368"},{"product_id":"triangle-27cm-with-cover-and-handle","title":"Triangle: 27cm with Cover and Handle","description":"\u003csection class=\"elementor-section elementor-top-section elementor-element elementor-element-7e8b7305 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"7e8b7305\" data-element_type=\"section\" data-settings=\"{\" background_background\u003e\n\u003cdiv class=\"elementor-container elementor-column-gap-default\"\u003e\n\u003cdiv class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-548e36ca\" data-id=\"548e36ca\" data-element_type=\"column\"\u003e\n\u003cdiv class=\"elementor-widget-wrap elementor-element-populated\"\u003e\n\u003cdiv class=\"elementor-element elementor-element-bd6b637 elementor-widget elementor-widget-woocommerce-product-data-tabs\" data-id=\"bd6b637\" data-element_type=\"widget\" data-widget_type=\"woocommerce-product-data-tabs.default\"\u003e\n\u003cdiv class=\"elementor-widget-container\"\u003e\n\u003cdiv class=\"woocommerce-tabs wc-tabs-wrapper\"\u003e\n\u003cdiv id=\"tab-description\" class=\"woocommerce-Tabs-panel woocommerce-Tabs-panel--description panel entry-content wc-tab\" role=\"tabpanel\" aria-labelledby=\"tab-title-description\"\u003e\n\u003cbr\u003e\u003cbr\u003eThis triangle is inscribed with contrast enhancing colors making it easier to use.\u003cbr\u003e\u003cbr\u003eUsing two 45° triangles provides an easy method of plotting and performing chart work.\u003cbr\u003e\u003cbr\u003eWith its protractor scales, the triangle is easily aligned in any direction with a chart meridian.\u003cbr\u003e\u003cbr\u003eDirection is maintained as one triangle is slid along the other to the desired position.\u003cbr\u003e\u003cbr\u003eDurable, clear vinylite. Short sides 19cm\u003cbr\u003e\u003cbr\u003eThe water resistance protective cover will help keep your instrument in best condition\u003cbr\u003e\u003cbr\u003eSKU: N701\u003cbr\u003e\u003cbr\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\u003csection class=\"elementor-section elementor-top-section elementor-element elementor-element-2e3bc9e6 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"2e3bc9e6\" data-element_type=\"section\" data-settings=\"{\" background_background\u003e\n\u003cdiv class=\"elementor-container elementor-column-gap-default\"\u003e\n\u003cdiv class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-913f354\" data-id=\"913f354\" data-element_type=\"column\"\u003e\n\u003cdiv class=\"elementor-widget-wrap elementor-element-populated\"\u003e\u003csection class=\"elementor-section elementor-inner-section elementor-element elementor-element-352e1ef4 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"352e1ef4\" data-element_type=\"section\"\u003e\n\u003cdiv class=\"elementor-container elementor-column-gap-no\"\u003e\n\u003cdiv class=\"elementor-column elementor-col-100 elementor-inner-column elementor-element elementor-element-4628590e\" data-id=\"4628590e\" data-element_type=\"column\"\u003e\n\u003cdiv class=\"elementor-widget-wrap elementor-element-populated\"\u003e\n\u003cdiv class=\"elementor-element elementor-element-46f47d19 elementor-product-loop-item--align-left elementor-grid-tablet-3 elementor-grid-mobile-1 elementor-grid-4 elementor-products-grid elementor-wc-products show-heading-yes elementor-widget elementor-widget-woocommerce-product-related\" data-id=\"46f47d19\" data-element_type=\"widget\" data-widget_type=\"woocommerce-product-related.default\"\u003e\n\u003cdiv class=\"elementor-widget-container\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e","brand":"Boat books Australia","offers":[{"title":"Default Title","offer_id":52958667473260,"sku":"N701","price":30.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0946\/1920\/5996\/files\/Triangle-27in-scaled-e1746582500273.jpg?v=1764850791"},{"product_id":"parallel-rule-captain-fields-525mm","title":"Parallel Rule with Cover – Captain Fields 21in","description":"Traditional parallel rule with Captain Fields pattern protractor markings.\u003cbr\u003e\u003cbr\u003eNickle plated brass links, 21 in\/ 533 mm length\u003cbr\u003e\u003cbr\u003eComes with protective cover\u003cbr\u003e\u003cbr\u003eSKU: N520","brand":"Boat books Australia","offers":[{"title":"Default Title","offer_id":52958667669868,"sku":"N520","price":105.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0946\/1920\/5996\/files\/parallel-rule-N520-scaled-e1746585818764.jpg?v=1764850805"},{"product_id":"parallel-rule-with-cover-captain-fields-600mm","title":"Parallel Rule with Cover – Captain Fields 24 in","description":"Traditional parallel rule with Captain Fields pattern protractor markings.\u003cbr\u003e\u003cbr\u003eNickle plated brass links, 24 in \/ 609 mm length\u003cbr\u003e\u003cbr\u003eComes with protective cover\u003cbr\u003e\u003cbr\u003eSKU: N521","brand":"Boat books Australia","offers":[{"title":"Default Title","offer_id":52958667932012,"sku":"N521","price":115.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0946\/1920\/5996\/files\/parallel-rule-N520-1-scaled-e1746589568945.jpg?v=1764850820"},{"product_id":"parallel-rule-captain-fields-18-e2-80-b3","title":"Parallel Rule – Captain Fields 18″","description":"Weems and Plath plain parallel rule. Length 380mm.\u003cbr\u003e\u003cbr\u003eThe 18-inch (45.72cm) Aluminum Arms Parallel Rule feature aluminum arms that join two clear acrylic rulers inscribed with a protractor scale. An essential item in any proper navigation kit, these rules are used to plot direction on a nautical chart from any convenient meridian or compass rose. The two straight-edged rules are connected to maintain the same angle. By walking the rules across the chart and securely holding down the non-moving rule, you can effectively plot a course.\u003cbr\u003e\u003cul\u003e\n\u003cli\u003e18-inches (45.72cm) long\u003c\/li\u003e\n\u003cli\u003eProtractor scale\u003c\/li\u003e\n\u003cli\u003eSturdy clear acrylic with aluminum arms\u003c\/li\u003e\n\u003cli\u003eProtective plastic sleeve\u003c\/li\u003e\n\u003c\/ul\u003e\u003cbr\u003eSKU: N518","brand":"Boat books Australia","offers":[{"title":"Default Title","offer_id":52958667997548,"sku":"N518","price":59.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0946\/1920\/5996\/files\/Weems-18inch-parallel-rule.jpg?v=1764850835"}],"url":"https:\/\/www.boatbooks-aust.com.au\/collections\/chart-plotting-instrument.oembed?page=2","provider":"Boat books Australia","version":"1.0","type":"link"}