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Breguet Pointer Telegraph
UMG22A62_359

Breguet Pointer Telegraph

Magnetic Pointer Telegraph From Siemens And Halske
UMG22A62_361

Magnetic Pointer Telegraph From Siemens And Halske

Mechanism Of The Pointer Telegraph By Louis Clément François Breguet
UMG22A62_360

Mechanism Of The Pointer Telegraph By Louis Clémen...

Needle Telegraph Produced By Charles Wheatstone
UMG22A63_210

Needle Telegraph Produced By Charles Wheatstone

Pointer telegraph of Wheatstone
UMG21A11_154

Pointer telegraph of Wheatstone

twoneedle telegraph produced by Louis-François-Clement Breguet / zwei Zeigertelegraf von Louis-Francois-Clement Breguet
UMG20B49_050

twoneedle telegraph produced by Louis-François-Cle...

a needle telegraph produced by Siemens & Halske / ein Zeigertelegraf von Siemens & Halske
UMG20B49_048

a needle telegraph produced by Siemens & Halske /...

a needle telegraph produced by Charles Wheatstone / ein Zeigertelegraf von Charles Wheatstone
UMG20B49_049

a needle telegraph produced by Charles Wheatstone ...