Vacuum Pump Syringe

A Hand Operated Pump Comprising A Cylindrical Metal Barrel Having Piston Fitted With A Handle On One Side And Stop-Cock With Riffled Nozzle On The Other Side. Riffled Nozzle Provides Attachment To The Flexible Tubing. Pulling The Piston Out With Stop-Cock Open, Sucks In The Air While Pushing It Inside Has No Effect. (Vacuum Pump Syringe)