Feedback digital caliper With this digital caliper from Feedback you can measure your bicycle parts to an accuracy of 0.01 mm. With this you can measure the depth, inside and outside dimensions of all your parts. The body is made of robust hardened steel and has an easy-to-read LCD display on the front and a handy bicycle-specific size chart on the back. The caliper can measure in both inches and mm and displays measurements to an accuracy of 0.01 mm on the screen. The maximum size that can be measured is 150 mm and the caliper has an auto-shut function to save batteries. These are also included. Specifications: Color: silver/black/red Material: metal Maximum size: 150 mm Batteries: 1.55v (included)