The Test control unit 32501 model is capable of measuring the concentric and the impact of various quantities. It has a robust design which makes it usable in the workshop and in the precision measurement room. Its measurement can be easily positioned because of its accessible slots. Its slot can travel with a maximum distance of 100 mm. Other specifications include a testing range from 0 5 mm to 0 35 mm, min. measuring roller gap of 29 mm., an adjustable contact roller pressure and a measuring roller that has the capacity to to rotate through the use of a geared drive. It also has a base plate in granite form (300 mm x 130 mm x 25 mm.).