450mm Marine Navigation Plotter Parallel Ruler Boat-Sea Chart Measuring Divider Navigation Parallel Ruler

Scale for transparent surfaces can view all of the page. copper-gasket after polishing, now not simple to oxidation, wear and sturdy. Fabricated from prime quality plastic be certain durability even under extreme conditions. Excellent transparent and strong and sturdy, exquisite appearance, imported ink printing scale. The manual ruler provides accurate measurements in the course of the aluminum chain, providing appropriate tension for drawing straight line parallel to every other line or reference points.