KGM Grid Encoder with Contact-Free Measurement can perform circular interpolation tests with radii ranging from 115 mm down to 1 µn; m at feed rates up to 80 m/ min. The KGM Grid Encoder can also perform free-form tests in two axes. The KGM Grid Encoder is provided with contact-free measurement facility which eliminates the influence of ball bearings such as with the dbb. KGM Grid Encoder with Contact-Free Measurement is made of quality grade raw material which ensures optimum durability along with long lasting trouble free service.