Standard Electric Standard Electric Time Secondary Clock AR2 or AR-2A?

Discussion in 'Electric Horology' started by railwayj, Oct 5, 2014.

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  1. railwayj

    railwayj New Member

    Sep 22, 2014
    Can someone tell me which model this clock movement is?
  2. eskmill

    eskmill Registered User
    NAWCC Fellow NAWCC Member

    Aug 24, 2000
    Region Flag:
    The photo of your SET slave clock movement appears to be a model AR-2.

    The two wires suggest either a simple non-AR or an AR-2. Ar-3 slave movements have three wires.

    The additional pivoted armature on the lower end of the electromagnets, when operated, unlocks the movement allowing gravity to pivot the rotor bringing the minute hand straight up to the hour. Hence, I believe it is an AR-2. (Automatic Reset, Two-Wire)
  3. Jeffrey R. Wood

    Jeffrey R. Wood Registered User
    Old Timer

    The AR2 and AR2A movements are exactly the same except for this one difference: The AR2 is designed to correct to the 59th minute, and the AR2A is designed to correct to the 60th minute. Actually, the correction impulse is delivered during the previous minute, so at the END of the impulse, the hands will jump to the desired time (either the 59th or 60th minute).

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