Telegraph block instrument, "penguin" type
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LicenseThis image is released under a CC BY-NC-SA 4.0
Licence
Buy this image as a print
BuyLicense this image for commercial use at Science and Society Picture Library
LicenseThis image is released under a CC BY-NC-SA 4.0
Licence
Buy this image as a print
BuyLicense this image for commercial use at Science and Society Picture Library
LicenseThis image is released under a CC BY-NC-SA 4.0
Licence
Buy this image as a print
BuyLicense 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; BR
Science Museum Group
© The Board of Trustees of the Science Museum
Telegraph block instrument; BR
Science Museum Group
© The Board of Trustees of the Science Museum
Telegraph block instrument; BR
Science Museum Group
© The Board of Trustees of the Science Museum
Telegraph block instrument; BR
Science Museum Group
© The Board of Trustees of the Science Museum
Telegraph block instrument; BR. Standard modularised 2-needle absolute (Down/Up Main; traffolyte-plated) 3-position type, with a white black-arrowed bakelite wedge as commutator, tapper/blockbell unit underneath, and an improvised metal base-plate. The plastic case is trafolite-plated "MICKLEOVER". Known as a 'Penguin'.
