Company Schwenk is one of the oldest manufacturers of precision measuring tools in the global market. The patented Bore gauge known as Subito, is an industry leader. Schwenk manufactures bore gauges, groove measuring gauges, distance measuring gauges, setting devices, circometer , measuring tapes, plug gauges, ring gauges and many other products. But our main specialty is bore gauges from 4.5mm up to 800 mm as standards, but we can go larger on request. As for depth ,we go up to 3000 mm , but longer lengths available on request. For the really small bores, we can do to 1mm with our Split ball probe..