Support of bedplate (1/20 inch zinc), 3 inches high from wooden base to underside of bedplate.
Cylinder (mandrel-drawn brass tubing), 1-1/2 inches internal diameter; 2-13/16 inches long over all.
Piston, 1-1/2 inches diameter; 1/2 inch long.
Stroke of piston, 2-1/4 inches.
Connecting rod, 5 inches long between centres; 5/16 inch diameter.
Piston rod, 5-1/8 inches long; 1/4 inch diameter.
Valve rod, 4-1/8 inches long; 3/16 inch diameter.
Crank shaft, 5 inches long; 1/2 inch diameter.
Centre line of piston rod, 1-1/4 inches laterally from near edge of bed; 1-5/8 inches from valve-rod centre line; 1-5/8 inches vertically above bed.
Centre line of crank shaft, 10-3/8 inches from cross centre line of cylinder.