Gisholt Machine Co., Madison, WI, PERIODOGRAPH, a weight driven programmable contact maker, with an E. Howard No. 70 movement and pendulum to power the program discs, in an oak case with black/gold tablet in the front door. C.1919.

Gisholt Machine Co., Madison, WI, PERIODOGRAPH, a weight driven programmable contact maker, with an E. Howard No. 70 movement and pendulum to power the program discs, in an oak case with black/gold tablet in the front door. C.1919. this is another of the HEAVY items from Blue Ball, Pennsylvania. We have not had one of these before, but we see that Stiles Auction sold one last year for $300+. We could guess the movement and pendulum should be worth that amount. Gisholt surely designed this to last 200 years, and this looks mechanically complete and sound; ticks. Suspension spring is still good, but came out of its notch when we tied it down; movement signed. Height 43 inches