Geodimeter

American  

[jee-uh-dim-i-ter] / ˌdʒi əˈdɪm ɪ tər /

Trademark.

1. a brand of distance-measuring instrument, used in surveying, that measures the change in phase of a modulated light beam when it returns to the instrument from a distant point.

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Example Sentences

Using an instrument called the geodimeter, Hofmann aimed a beam of in tense light from a site on one side of a fault at a reflector set up on the other side, between twelve and 20 miles away.

From Time Magazine Archive

By measuring the time required for the light to travel to the reflector and back to the geodimeter, he calculated the precise distance between the two points.

From Time Magazine Archive