Cast iron box, wall thickness 2 mm. From the front, hollow rounding Ø 16 mm. Sole reinforcement in front of the mouth: 4x28 mm. Above that, 31 mm long, 2.5 mm wire. Behind that, 3 mm triangular webs as iron stop with a wooden filling pulled over it as hand protection. Screw from below (probably added later). Iron cap: 34x24x4 mm with 4 mm thread and screw.

Iron: 26 mm

Cutting angle: 43°

Mark: STANLEY RULE & LEVEL CO