MITUTOYO SURFTEST SJ-412 is a contact-type surface roughness tester that acquires surface morphology of a specimen fixed on a planar surface by a stylus detector that is drag linearly over the specimen itself. The contact technique is based on the conversion of the vertical movement of the tip sensor into an electrical signal, which will be quantified according to various international standards (EN ISO, VDA, ANSI, JIS) and customized settings. The skidless detector allows to measure the primary profile (P), roughness profile (R), waviness profile (W) and more. The software can perform a mathematic compensation of curved, radiused and tilted surfaces. It allows two different evaluation conditions within one adjustable measurement. Resulting profilometry is suitable for a variety of uses, as: geometric control, roughness and texture measurement, morphology evaluation.