The Mitutoyo Surftest SJ-310, 178-571-01A is a compact, portable, easy-to-use surface roughness measurement instrument equipped with extensive measurement and analysis features. This model is a Standard Type Drive unit with a 0.75mN Measuring Force. Features a large color graphic LCD touch-screen that provides excellent readability as well as a back-light for improved visibility in dark environments. The internal memory, password protection, multilingual support and stylus alarm are just a few things that make these highly functional. It also features enhanced power for making measurements on site possible. Also equipped with a highly-functional display unit containing an integrated high-speed printer.