Sturdy base with ground base, scale hardened and ground.
All reading parts are anti-glare satin chrome-plated. Sharp jet black scales. With fine adjustment. Slightly raised edges to the scale prevent the slide from damaging it. Reading zero and marking scriber are adjusted with reference to the bottom of the base (marking out from ”0”). Drawing dimensions can therefore be transferred directly without the risk of calculation errors.
The scriber is carbide tipped.