When it comes to metallurgical hardness testing equipment Williams Tester is one of the most experienced calibration laboratories in the Eastern United States. For over 60 years we’ve provided the industry with the best calibration service and products. Having experienced members that worked with some of the largest names in the industry like Wilson, Instron and Newage rest easy that you’re in the right place! We accredit our success to always aiming to exceed our customers’ expectations, and that we have stayed true the one guiding principle the company was founded upon which is “The customer always comes first!”