This mechanical device is for the controlled measurement of the tension of timing belts For the precise and exact measurement of belt tensioning according to manufacturer data Scale: 0,0-20,0 mm Increments: in mm Mechanism: Mechanical (spring) Rotation adjustment to 360°: 1 mm Rotation ratio: 1/10 mm Rotation adjustment against force per full rotation: 10 N (± 1 Kp) Weight: 0.26 kg