MRA 1 tellurometer set, c 1960.
4 0 c m
 
30cm
actual image size: 22cm x 32cm

MRA 1 tellurometer set, c 1960.

© Science Museum / Science & Society Picture Library

Description

T L Wardley designed the tellurometer in 1957, to measure long distances over undulating countryside with an accuracy of a few centimetres in about 20 kilometres. A transmitter was set up at one end of the line and a reflector/retransmitter at the other re-radiated the mesage beam. These are master and remote instruments and accesories.
 

Image Ref.

10280188
 

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