Make tools, fittings, and small metal pieces used in other products.
Trues coiled precision springs and tests springs for conformance to specifications: Places set of springs over mandrel, places metal bar over springs, and pushes against bar to compress springs to specified length. Positions spring over template or between poles of electronic spring checker to detect variation from standard spring length. Places spring on flat surface, and measures squareness of end, using gauge. Inserts wedge between coils and taps wedge with mallet to even pitch between coils and adjust length of spring.