Navigation Parallel Ruler Measurement Tool Universal Easy to Use Mapping Points to Pull Rolling Ruler Marine Parallel Ruler for School Boat 600mm

[High Transparent]: Navigation Parallel Ruler has good transparent and does not obscure too much information. [Features]Designed precise scale, accurate and easy to see, very easy and flexible to operate. A good accessory for drawing and measurement [Material]: The parallel ruler is made of premium acrylic sheet, high hardness, and long service life. [Exquisite Craftsmanship]: Our navigation parallel ruler can have a nice experience of using it, for drawing a line parallel to another line or reference [Function]: Our navigation parallel ruler is designed to draw bearing line or course, the degree amount of bearing line degree . Package Includes:1 Navigation Parallel RulerNote:Please allow slightly errors due to manual measurement and different monitors.