STAEDTLER MARS 964 51-8 Slope Ruler

Vintage STAEDTLER Mars 964 51-10 Adjustable Triangle with Slope & Rise Drafting

STAEDTLER Mars Gradient Triangle Ruler 20cm 964 51-8

STAEDTLER Mars Triangle Ruler 30cm

STAEDTLER MARS 964 51-8 Drafting Slope Ruler with Shipping Included

Vintage Staedtler Mars 964 51-10 Adjustable Triangle Rise/Slope /Degrees+ Rulers

Staedtler Ruler Gradient Ruler Mars 30cm 964 51-12

STAEDTLER MARS Triangle Ruler 30cm for Drafting