Navigation Parallel Ruler, Great Transparency Marine Navigation Parallel Ruler Strong ar Scale for Drawing (450mm)

【Description of Function】The parallel ruler is used for drawing azimuth lines or navigation lines and measuring azimuth line degrees or heading line degrees when chart operations are carried out, professional marine parallel ruler. 【High Transparency】Our navigation parallel ruler has high transparency, clear scale and accurate measurement, with level ruler clear scale, so that you can have a nice experience of using it. 【Copper and Acrylic Material】Our parallel ruler navigation is made of copper and acrylic material, the pure copper spacer is polished, not easy to oxidize and with stable face, longer service life. 【Flexible Operation】This navigation parallel ruler is very easy and flexible to operate, just follow the actual needs and routine operation. Each hand holds a ruler and moves parallel to it alternately. 【Exquisite Craftsmanship】This marine navigation parallel ruler is light in weight, easy to carry, and exquisite craftsmanship, so you can achieve stable use. The perfect drawing tool for students and navigators, ect., Manufacturer: dsheng