Measuring blade made of stainless steel, 40 x 1.0 mm, with
etched mm-graduation of long duration. The support blade
made of silver anodised aluminium profile, I-form, 40 x 14 mm.
Accuracy: +/- 0.0285° = 0.5 mm/m. Dimension: 200 x 125 mm, 250 x 135 mm, 300 x 135 mm, 400 x 190 mm, 500 x 210 mm.

Illustrative order: try square, stainless steel, length 250 mm: KMR250