Three train, flatbed turret clock by E. Dent with double three-legged gravity escapement, c. 1939.

Movement of a 3-train turret clock by E. Dent and Co., (made about 1939); the going train with Grimthorpe's double 3-legged gravity escapement; the striking train and Westminster quarters controlled by locking plates; with 1 1/2 second pendulum and double trestle frame for support

Movement of a 3-train turret clock by E. Dent and Co., made about 1939; the going train has Grimthorpe's double 3-legged gravity escapement; the striking train and Westminster quarters are controlled by locking plates; with 1 1/2 second pendulum and double trestle frame for support.