we can supply Check Master Here are brief introduction of our company: We are a specialized manufacturer and distributor of Calipers, Micrometers, Gages and other specially designed instruments, and we have passed ISO9001-2000. Anyi Instrument Co. Ltd, as a new enterprise, is positioned to manufacture and distribute quality products in China. Led by our experienced senior management team, we are making unremitting efforts to create brand names. 1. Econmial check master (Steel Gage Blocks) This Check Master, designed for convenient and quick testing of general calipers, accords with ISO and DIN 862 standards. 2. General check master (White Ceramic Gage Blocks) This Check Master is desiged t