A string can be used to fix the stopwatch used on the hole for a long distance of course.
The protractor's allows placing a dividing point or pencil on a point of the hole
Determine longitude on protractor to determine course or bearing
When charting, it is used to draw the bearing line or heading line, and measure the bearing line or heading degree.
Description
Kopinma colour:Transparent
Material:plastic
size:300mm
Package Contents:
2*Nautical chart drawing triangle ruler
Only the above package content, other products are not included.
Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.