Antique Pneumatic Temperature Regulation Panel by Johnson vintage simulators Rows of hand-set steel pins

Rows of hand-set steel pins deflect the balls as they descend

JP - 13172 - 042325

light discoloration and wear present on the seat and backrest from use

Seat: 16" W x 16" D x 17" H

MM - C-10398 - 081624

Antique Pneumatic Temperature Regulation Panel by Johnson vintage simulators Rows of hand-set steel pinsc. 1910s 1930s; Johnson Service Company New York A handsome early pneumatic control panel from the Johnson System of automatic temperature regulation one of the foundational technologies that shaped modern HVAC control. Housed in a solid wood case with dovetailed construction, the panel incorporates a large Johnson Service Company air pressure gauge, two manual dial controls labeled Open and Closed, and a metal maker's plate detailing the system's