This is a cabinetmaker's square! this is a cabinetmaker's square! it is used to lay out or transfer measurements quickly & accurately — you always have an ample reference face against your work without having to flop the square. This also simplifies working in two axes at once (e.g., measuring in 2" & over 1-1/2"), substantially reducing the chance of error when measuring & marking two
Dimensions simultaneously. The stainless-steel blade is 3" (77mm) wide & 6" (152mm) long, machine ground on all four edges. This metric model is graduated to 100mm along both edges & across one end to 70mm. The diamond cut-out in the blade holds a pencil tip in position & makes it easy to draw lines parallel to an edge. The locking mechanism has a notched pin like those on combination squares, with the blade bearing on polished, hardened steel reference pins set in the body. Accurate, & well made..