Telegraph block instrument, "To Crews Hill"
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Buy this image as a print
BuyLicense this image for commercial use at Science and Society Picture Library
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Science Museum Group
©The Board of Trustees of the Science Museum
Telegraph block instrument, "To Crews Hill"
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; GNR. Pegging/non-pegging absolute 2-needle (top electrically/bottom mechanically operated) 3-position/3-indication. Has circular indented-edge bakelite-commutator and bell-tapper to RHS; the bell-dome assembly is mounted on metal bracket on top of the instrument. A GNR ivorine plate inscribed "To Crews Hill" is attached to the front top edge of instrument.
