Early 20th Century Piston Cutaway Demonstrator by Welch Scientific uv while the two smaller center

while the two smaller center lights use standard bulb fixtures

This vintage Varatronic Piezo lighter was manufactured by Ronson

JM - 105023 - 011024

MM - C-9021 - 092724

' cast into the iron

Early 20th Century Piston Cutaway Demonstrator by Welch Scientific uv while the two smaller centerNo. 1753 (1 3) Gas Engine Model Four Cycle Engine W. M. Welch Scientific Co. Chicago Antique cast iron and aluminum piston cutaway display model. This piece is an early Welch build. It represents a cutaway of one of the many functional pistons manufactured by the company and features moving parts to demonstrate the inner workings. The Welch Scientific Company was an educational supply company founded in 1880 by William M. Welch in Maquoketa, Iowa. In