A vernier caliper for accurately measuring seat posts, head tubes, bearings, spoke diameters, and other components Ability to measure in metric and inches in external, internal, depth and stepped dimensions make it an indispensable shop tool Features a large LCD screen and quality feeling buttons Resolution: +/ 0.01mm/0.0005" Accuracy: +/ 0.02mm/0.0001 (-100mm) Repeatability: +/ 0.01 mm | 0.0005" Uses LR44 batteries Retailers are not permitted to sell on the Amazon.com marketplace unless authorized in writing by Park Tool