Hermle 351-020 an FHS Hermle Clock Movement that has a plate size measuring 120 x 120 mm and a hand shaft length that measures 33 mm. This is an 8 day Westminster chime movement with 1/4 hour chime and hour strike, key wound, pendulum regulated and 5 hammers at the bottom. Relative to the image, the key hole spacing measures A) 48.75 mm, B) 49.25 mm, and C) 30 mm. This movement is available in 11 cm, 15 cm, 21 cm, 23 cm, 25 cm, 26.5 cm, 31 cm, 32 cm, 34 cm, 38 cm, 43 cm, 45 cm, 48 cm, 52 cm, 55 cm, 66 cm, 75 cm, and 85 cm.