Steampunk Daily: Time pieces: By Geoff Tomlin (UK), built in 1969
Electromechanical time/date nixie clock from Geoff Tomlin (UK), built in 1969. The only semiconductors used are diodes!
Time is counted by a synchronous motor and series of gears, operating rotary switches. Day is counted by a uniselector driving a diode matrix decoder for the day nixies. Month is counted by a uniselector driving the month wheel, and another uniselector is used to determine the number of days in the month. A modified impulse counter is used for the year. 12/24 hour display selectable via rotary switch top-left.
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