Gallery - Other Types of Pulse Clock

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No. 38 Used to check accuracy of clock No. 46, also used in some manual exchanges for timing of trunk calls. Operated by six second pulses. No. 38 Used to check accuracy of clock No. 46, also used in some manual exchanges for timing of trunk calls. Operated by six second pulses. No. 38 Used to check accuracy of clock No. 46, also used in some manual exchanges for timing of trunk calls. Operated by six second pulses. No. 38 showing the mechanism. No. 38 showing the digit reels. No.40 call timer reads 0.0 to 12.0 minutes, operates by 6 second pulses. 1930 No.40 call timer reads 0.0 to 12.0 minutes, operates by 6 second pulses. 1930 No.40 call timer reads 0.0 to 12.0 minutes, operates by 6 second pulses. 1930 No. 44 Used in some manual exchanges for timing of calls. Operated by six second pulses. No. 44 Used in some manual exchanges for timing of calls. Operated by six second pulses. No.44, top cover removed, showing mechanism. Clock 72A Operates on 6 second pulses. Records time up to a total of 12.0 hours and 59.9 minutes in steps of 0.1 minutes.
Clock 72A side view. jQuery Popup by VisualLightBox.com v5.0m

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