Jimy produce Caliper 20 mm. Calliper is a device used to measure the distance between two opposite sides of an object. Jimy crafting Caliper 20 mm with best choice according to Surgeons demand and instructions. Please note that website images are often representative of the product family and may not conform to the exact specifications or features of the item you select. The final specifications will match the description of the specific catalog item you select. Please review such specifications in the item description to ensure the correct product is ordered.