The legs of these calipers pivot on a roller and are tensioned with a bow spring. available in internal and external form and in a range of sizes.

The double square is one of the must-have woodworking and carpentry tools. Just like the speed square, try square, framing square, T square, and combination square, the double square works hand-in-glove to make your jobs such as squareness checking, marking, and scribing become easier. Professionals should have them all because when it comes down to it, each of them plays a unique role that makes them quite irreplaceable. The body of a double square consists of a head (handle) and a blade. The head can slide along the blade. Therefore, two things set this tool apart from other woodworking and machinist tools: firstly, they are adjustable, and secondly, they can be applied to check the squareness of corners from both ends. Speed square and try square is not adjustable.

This brass gauge is identical to the German made models, but less expensive. The quality is such, however, that one can hardly tell the difference. Its made of solid brass and features notched jaws for inside/outside measurements as well as a one millimeter increment Vernier gauge.

These handy little squares have spring steel blades riveted to brass faced rosewood stocks. Suitable for dovetail joint marking.