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Related to calipers: brake calipers, Digital calipers
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also cal·li·per  (kăl′ə-pər)
1. often calipers An instrument consisting of two hinged legs, used to measure thickness and distances.
2. A large instrument having a fixed and a movable arm on a graduated stock, used for measuring the diameters of logs and similar objects.
3. A vernier caliper.
a. The assembly housing the brake pads in a disc brake.
b. The assembly in certain bicycle brakes that forces the brake pads against the wheel rim.

[Alteration of caliber.]

cal′i·per v.
References in classic literature ?
Rather sur- prised, I said Yes, when he produced a thing like calipers and got the dimensions back and front and every way, taking notes carefully.
com/research/w8zr6n/global_and) has announced the addition of the "Global and Chinese Brake Calipers Industry 2014" report to their offering.
The 2014 Global and Chinese Brake Calipers Industry' is a professionally produced research report providing in depth analysis of the world wide calipers industry with a particular focus on the Chinese market.
AUSTIN, Texas -- National Instruments (Nasdaq:NATI) today announced that engineers at Computer Controlled Solutions (CCS) used the NI LabVIEW graphical development environment along with NI data acquisition and motion control products to build a dynamometer designed specifically for testing calipers and brakes on Formula 1 high-speed racing cars.
The upgrading of existing Calipers throughout our installed base delivered performance for next generation devices at a fraction of the cost of new systems proving the value of this Program.