Dynameter /(?)/

Dy·nam·e·ter

Dynameter

n.
  1. A dynamometer.
  2. An instrument for determining the magnifying power of telescopes, consisting usually of a doubleimage micrometer applied to the eye end of a telescope for measuring accurately the diameter of the image of the object glass there formed; which measurement, compared with the actual diameter of the glass, gives the magnifying power. (Opt.)