Photographs showing phonic motor, signal forming unit and send relay unit

Made:
1952 in Herstmonceux
supplier:
Royal Greenwich Observatory, Herstmonceux

Three mounted photographs showing phonic motor, signal forming unit and send relay units

Details

Category:
Time Measurement
Object Number:
1952-188
type:
photograph
taxonomy:
  • visual and verbal communication
credit:
Royal Greenwich Observatory, Herstmonceux

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