3X(Chart Ding e Ruler for Ship Ding 300mm -Scale e Ruler for Distance Measu
3X(Determine longitude on protractor to determine course or bea
The protractor's allows placing a dividing point or pencil on a point of the hole
A st can be used to the stopwatch used on the hole for a long distance of course.
When charting, it is used to d the bea line or heading line, and measure the bea line or heading degree.
colour:Transparent
Material:plastic
size:300mm
Package Contents:
2*Nautical chart ding e ruler)
The protractor's allows placing a dividing point or pencil on a point of the hole
A st can be used to the stopwatch used on the hole for a long distance of course.
When charting, it is used to d the bea line or heading line, and measure the bea line or heading degree.
colour:Transparent
Material:plastic
size:300mm
Package Contents:
2*Nautical chart ding e ruler)
