C.1970, D. J. Blackwell, Naugatuck, Conn, Wall Regulator, single weight timepiece in a mahogany case with dark walnut finish.

C.1970, D. J. Blackwell, Naugatuck, Conn, Wall Regulator, single weight timepiece in a mahogany case with dark walnut finish. Condition: this clock hung in Dana's machine shop in Naugatuck. He made several of these to sell at the time; the detail foto shows a spare movement, dial and mounting bracket, selling later today. Note the invar pendulum rod. Dana wrote a couple of articles on the benefit of invar over wood as a stable timekeeper. The original dial is signed. Key lock door with key. Top crest slips off for shipment. Height 39.5 inches