Hermle 131-030.21 FHS Hermle Clock Movement has a plate size that measures 90 mm and a hand shaft length that measures 33mm. This Hermle movement features an 8 day bim bam movement with a 1/2 hour strike, key wound, 21 cm long pendulum, with dead beat escape and 3 hammers at the side. Relative to the image the key hole spacing measures A) 31 mm and B) 49 mm.