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Most viewed - Communications
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 "Telecrane" Adjustable Microphone19 views
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 "Telecrane" M.S.A. Control Station19 views
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 Steel Company of Ontario, Canada - Stelco Telecrane19 views
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 Telecrane HP-60 Tray (bottom view)19 views
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 E-60 Minephone19 views
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 Tone Control Unit19 views
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 Single-Frequency Communication Equipment for Mine Locomotive18 views
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 Tubes from Equipment Box18 views
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 Underside view of tray from M.S.A. Telecrane Equipment Box18 views
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 M.S.A. Control Station - assembled and disassembled18 views
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 Elevator Control and Communication Equipment18 views
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 Hanger for Transmitter and Receiver boxes on Elevator Control and Communication Equipment18 views
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 Transmitter with top removed to show tubes18 views
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 Wiring in transmitter18 views
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 Wiring in receiver18 views
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 Receiver without Hanger18 views
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 Telecrane AC Line Coupler with cover on and off18 views
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 Telecrane Choke Unit18 views
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 25/60 Cycle Power Supply (I.T.C.)18 views
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 TVL Equipment18 views
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 Three Views of Ground Equipment18 views
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 Radio & TV Tower Control Face Open of Ground Equipment18 views
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 Interior of Equipment18 views
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 Hoist Phone - Battery Charger Cover Off Wheel Side18 views
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 Hoist Phone - Battery Charger Cover Off Solid State18 views
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 Hoist Phone - Battery Charger Solid State18 views
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 Minephone Adapted for Railroad Hand Car Use18 views
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 D-55 Transmitter-Receiver Unit for Minephone18 views
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 Slack Cable Detector Equipment18 views
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 TV Tower Cable Clamp18 views
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 Mine Alarm System MSA18 views
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 Mine Alarm System MSA18 views
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