The Tellurometer was the first successful microwave electronic distance measurement equipment. The name derives from the Greek tellus, meaning Earth. ==History== The original Tellurometer, known as the Micro-Distancer MRA 1, was introduced in 1959. It was invented by Dr. Trevor Lloyd Wadley of the Telecommunications Research Laboratory of the Sout...
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instrument using microwaves to measure distance
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http://phrontistery.info/t.html
tellurometer 1. A surveying instrument that measures distance by measuring the round-trip travel time of reflected microwaves. 2. A device that measures distances using the time that microwaves or radio waves take to be transmitted across the distance to be measured.
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