Staedler Mars 561 scale ruler 1:100 - 1:500

If you are an architect, a surveyor, or an excavator, the Staedtler Mars 561 reduction scale ruler is made for you. It is the ideal tool for your industrial and technical drawings:

• made of ABS plastic, this ruler is unbreakable


• the graduations do not fade over time and use. This model is thus suitable for daily use.


• with a length of 30 cm, this ruler has 6 scales. You can easily use it on an A4 or A5 size sheet. It includes 3 sides on which the triangular reduction scale C (1:100 - 200 - 250 - 300 - 400 - 500) is indicated.

Delivered in blister pack.