915 Generation Chart Drawing Triangle Ruler for Drawing 300mm -Scale Triangle Ruler for Distance Measurement Teaching Engineering Design

Determine longitude on protractor to determine course or
The protractor's allows placing a dividing point or pencil on a point of the hole
A can be used to fix the stopwatch used on the hole for a long distance of course
When charting it is used to draw the line or heading line and measure the line or heading degree
colourTransparent
Materialplastic
size300mm
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