- 150mm/6 inch measurement range handles seat posts, head tubes, bearings, spoke diameters, and more
- Measures external, internal, depth, and stepped dimensions to cover the full range of bicycle component measurement tasks
- Resolution of 0.01mm/0.0005 inch with accuracy rated at +/-0.02mm/0.001 inch
- Repeatability of +/-0.01mm/0.0005 inch supports consistent readings across repeated measurements
- Switches between metric and imperial units on the large LCD screen
- Battery cover features a captured screw for compliance with child safety regulations in many countries
- Powered by LR44 battery
The Park Tool DC-3 Digital Caliper is a precision measurement tool for bicycle workshop use, designed for technicians who need accurate readings across a wide range of component dimensions. It measures external, internal, depth, and stepped dimensions — covering common shop tasks such as identifying seat post diameters, head tube dimensions, bearing sizes, and spoke gauges. The DC-3 reads in both metric and imperial units, with a range of 150mm/6 inches and a resolution of 0.01mm/0.0005 inches, displayed on a large LCD screen for clear, at-a-glance readability. Accuracy is rated at +/-0.02mm/0.001 inches with repeatability of +/-0.01mm/0.0005 inches, placing it firmly in the precision tier expected for professional service work.