300mm Triangle Ruler Protractor for Ship Drawing Teaching Engineering Geometry Rulers with Handle Math Protractor Ruler

Features: Brand new and high quality Carved in contrasting colors (black and red), the black handle has a pencil holder for easy handling. As a pair for transmitting directional lines on a chart, the protractor scale can be easily aligned with the chart warp in any direction. Maintain orientation, as one triangle slides along the other to the desired position, and a 90-degree Angle helps determine the line of position. Made of transparent and durable vinyl, durable. Protractor Triangle with Handle is an essential tool for accurate chart work and plotting, making it a must-have for any sailor or navigator.

Specifications: Material: Plastic Size: Approx. 33.6x23.8cm/13.23x9.37in

Note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item.

Package includes: 1x Triangle Ruler