450mm Nautical Navigation Parallel Ruler Tied-Up Sea Chart Measuring Divider Boat-Navigation GPS Plotter Parallel Ruler

Scale for transparent surfaces can view the entire page. Pure copper-gasket after polishing, not easy to oxidation, wear and durable. Made of high quality plastic ensure durability even under extreme conditions. 450mm Nautical Navigation Parallel Ruler Tied-Up Sea Chart Measuring Divider Boat-Navigation GPS Plotter Parallel Ruler. Features: Scale for transparent surfaces can view the entire page. Pure copper-gasket after polishing, not easy to oxidation, wear and durable. Made of high quality plastic ensure durability even under extreme conditions. Good transparent and strong and durable, exquisite appearance, imported ink printing scale. The manual ruler provides accurate measurements through the aluminum chain, providing appropriate tension for drawing straight line parallel to another line or reference points. Specifications: Material: PVC. Length: Approx. 45cm/17.72in. Package Includes: 1x Parallel Ruler. note: Please allow 1-2cm errors due to manual measurement, make sure that you