Staedtler Mars Geometry Set Square 22cm

Staedtler 22cm Geometry Set Square. A useful and versatile piece of equipment, offering a protractor, ruler and 45° square in one. The ruler along the hypotenuse is gradutaed in mm and runs from 0 to 10cm from the centre in both directions. The protractor scale runs from 0 to 180 and also in reverse. The angle markings are carried foward to the edges. 2 vertical scale sare incorporated, running from 0 at the base, to 8cm.
Transparent polystyrene with ink studs, beveled edges and removable grip.
22cm across the triangle base.
Part number 568 35.  



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