Sun-Tec Corporation offers a diverse collection of products from hardness testers to accessories. Clark Instrument, Detroit Testing Machine Company and Service Diamond Tool are all divisions of Sun-Tec Corporation. Each specializes in its segment covering Rockwell-Type, Vickers, Knoop, Brinell, Ductility, Tensile, Compression, and Portable testing – in addition to Specialty Machines and equipment for Metallographic Preparation.