callipers

/K AE1 L IH0 P ER0 Z/
noun
  1. 1

    A device used to measure thickness between two surfaces, especially for small or precise measurements.

  2. 2

    A metal (orthopedic) leg support.

Synonyms

Source: https://en.wiktionary.org/wiki/calipers, https://en.wiktionary.org/wiki/callipers