8 Day Mechanical Clock Movement Time Only Mechanical Clock Movement is a time only movement with a 13" drop. This is a reproduction movement made in India, commonly used in school clocks. Movement plates measure 3 1/2" (height) x 3 1/4" (width) x 1 1/2" (deep). Total dimensions of movements including gears, casing brackets are 5" (height) x 4 3/4" (width) x 3 3/4" (depth, this measurement includes key arbors). 13" drop is measured from the center of the hand shaft to the tip of the pendulum. The hand shaft is 2". Movement is supplied with the suspension spring, a pair of hands for an 11" dial, and a key. The distance from the center of the hand shaft to the center of the winding arbor is 45 mm.