The correct answer is establish a scale.


A. attest
B. conform
C. compute
D. establish a scale

The correct answer is (D) To establish a scale; to determine, test, or rectify the graduation of quantitative measurement instrument; to divide or mark with gradations, as on a meter, gauge, thermometer, etc. Also, determine the correct range, angle, or elevation for (a rifle, mortar, artillery gun, etc.) by observing where projectiles hit.

Calibrate comes from Arab galib (form).

Examples of use:

  • They calibrated their measuring instruments before beginning.
  • He used a set of standard weights to calibrate the balance.

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