Compact Model 534 canners vacuum pressure gauges are specially designed for testing the vacuum in canned food and drink products. These easy-to-use, destructive sampling testers use a rugged stainless steel needle to puncture the container, while a rubber gasket provides an airtight seal for an accurate vacuum pressure reading. The non-removable needle is easily cleaned for multiple uses.
BOURDON TUBE: Béryllium copper WINDOW: Twist-on polycarbonate MOVEMENT: Brass
DIAL: Galvalume, white background wrth black graduations
POINTER: Galvalume, black
CASE: Brass, chrome-plated
CONNECTION: Stainless Steel piercing needle