A brake caliper does all of the hard work to slow down your car when you stamp on the brake pedal. Haynes explains how calipers operate and reveal the different types.
6" Outside Caliper OD Digital Electronic Gauge Calipers Woodworking With Handle | eBay
How to Use Calipers like a Pro: Rules for Getting Accurate Measurements | Katz-Moses Tools
Mitutoyo 500-160-30 AOS Absolute Digimatic Caliper, Precision Measuring Tool, 6"/150mm, without Output, Carbide OD/ID Jaws - New York Microscope Company