A pioneer in Gear Testing Instruments, Osaka Seimitsu Kikai Co., Ltd. (OSK) is always developing gear measuring instruments for the new age, utilizing high precision manufacturing technology and software technology of machine control and data analysis. Continuous basic research of gearing, measurement and peripheral technology creates unbeatable accuracy, originality, reliability and usability.

OSK was the first to develop CNC control gear surface measuring instruments. These systems are used extensively in research centers and factories around the world.