Hand Vacuum Pump

Handheld, blue vacuum pump with gauge and 500mm tube with a 6mm inner diameter. Displaces 725ml of air with a pump rate of 15ml per pump. This pump features a gauge which will measure up to 29 inches of mercury (in Hg).Rubber O ring will roll in cylinder at 20Hg after approx. 10 pumps. Experiment with air pressure and atmosphere, vacuum filtering and checks for leaks. Can be disassembled to be serviced/oiled when needed. Not for heavy continuous pumping or for automotive use.