Double Barrel Air Pump

| View Cart ⇗ | Info

“Crank M raises and lowers the two pistons C and D. The valves allow only for air to be removed from chamber J with a cutoff valve at K. The mercury filled barometer L measures the pressure in J.” —Quackenbos 1859


G. P. Quackenbos A.M. A Natural Philosophy: Embracing the Most Recent Discoveries in the Various Branches of Physics, and Exhibiting the Application of Scientific Principles in Every-day Life (New York: D. Appleton and Company, 1859) 180


TIFF (full resolution)

2400×1897, 738.1 KiB

Large GIF

1024×809, 117.9 KiB

Medium GIF

640×505, 63.6 KiB

Small GIF

320×252, 22.9 KiB