Staedtler Mars Drafting Arm for 661 A3 Drawing Board 660 20
Staedtler Mars Drafting Arm for 661 A3 Drawing Board 660 20
Student's name
First and last name, and class if you know it. This goes on the pack label.
Pickup available at Mega DC – Tweed Heads South
Usually ready in 24 hours
Protractor Drafting Head For The Mars 661 Boards
Staedtler Mars 660 20 is a drafting head with two transparent rulers and a protractor dial, made to work with the Mars 661 A3 and A4 drawing boards.
Where the board alone gives parallel lines, the drafting head adds angles. A Stop/Go push-button lets the head either hold a chosen angle or turn freely, and it clicks into automatic settings at every 1° step. The protractor scales run in opposite directions from 0 to 90°, with extra marks at 7° and 42° for dimetric projection, a common way of drawing objects in technical drawing classes.
The two rulers carry double-sided, opposite-running scales, and parallel guide lines on them act as a hatching aid when shading sections. Because the rulers sit at a fixed right angle, right angles can be drawn without lifting the head. Staedtler state that it is made in Germany and is operated with one hand.
Our listing calls it a drafting arm; Staedtler name it a drafting head.
See the matching drawing boards, geometry and technical drawing tools and Staedtler range.