Tower Clock Movement 3MR-EXT



These clock movements are built to your requirements and come complete with the mechanism and a pair of standard hands. All mechanisms use a worm & worm gear drive. To order a clock mechanism, the proper hand size should be determined by measuring from the top of the 12 to the bottom of the 6 on your clock face design. The minute hand length is the dimension from the dial center to the tip of the hand. The hour hand will be proportionate. Shaft extensions are not adjustable in the field.

Movement has hand shaft extension for back lighted dials

The 3MR series is a direct drive clock mechanism utilizing a single reversible motor. Hands cannot be manually turned. A standard unit can mount to a dial up to 3/4" thick. 

Wiring notes for single movement setup:

White is “neutral”. Goes to “W”

Blue is “normal”. Goes to “B”

Red is “reset”. Goes to “R”

Purple and orange are for an optional pilot clock and are unused. Either cap or cut off.

View Spec Sheet on this Item

Information on optional MC3 auto control unit


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