A rare E. Howard No. 74 Astronomical Regulator, c1876. This one was in the Dearborn Observatory at Northwestern University. The 5-jar pendulum weights 23.5 lbs. The dial weighs in at 5 lbs. The movement weights 13 lbs. The wood case bolts on to a one-piece cast iron back plate that gets bolted to the wall; the back piece weighs approx. 140 lbs. Accuracy is .01 sec/day.