Telegraph block instrument (sending/receiving)
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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
LicenseTelegraph block instrument (sending/receiving)
Science Museum Group
© The Board of Trustees of the Science Museum
Telegraph block instrument (sending/receiving)
Science Museum Group
© The Board of Trustees of the Science Museum
Telegraph block instrument (sending/receiving)
Science Museum Group
© The Board of Trustees of the Science Museum
Telegraph block instrument; LNWR Fletcher's ('Tele. Dept No 3409') combined 2-needle absolute pegging/non-pegging 3-position/3-indication type. Traffolyte-plated "Aberdeen South" and "West Line", with circular bakelite-commutator and blockbell-tapper at bottom RHS with underslung bell-dome/tell-tale trembler. At top RHS of door, a 'distant-aspect' bulb-indication is missing.
