Telegraph Block Instrument

Telegraph Block Instrument Telegraph block instrument Telegraph block instrument

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Creative Commons LicenseThis image is released under a CC BY-NC-SA 4.0 Licence

Buy this image as a print 

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License this image for commercial use at Science and Society Picture Library

License

Science Museum Group
© The Board of Trustees of the Science Museum

Telegraph block instrument
Science Museum Group
© The Board of Trustees of the Science Museum

Telegraph block instrument
Science Museum Group
© The Board of Trustees of the Science Museum

Telegraph block instrument: tombstone wood-cased single-needle electrical flow-meter.

Details

Category:
Signalling & Telecommunications
Object Number:
1994-7111
type:
telegraph block instrument