Editor’s Pick Marine Navigation Parallel Ruler Clear Scale High Accuracy Transparency Boat Ship Drawing Parallel Ruler, Nautical Charts Parallel Ruler for Boat (450mm)

Exquisite Craftsmanship: This marine navigation parallel ruler is light in weight, easy to hold, and exquisite craftsmanship, so you’ll reach stable use.
Flexible Operation: This navigation parallel ruler is really easy and flexible to operate, just follow the real needs and routine operation.
Description of Serve as: 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.
Copper and Acrylic Subject matter: Our parallel ruler is made of copper and acrylic Subject matter, the pure copper spacer is polished, not easy to oxidize and with stable face.
High Transparency: Our navigation parallel ruler has high transparency, clear scale and accurate measurement, so to have a nice revel in of the usage of it.