The B5550 bench model absolute pressure gauge is the standard laboratory manometer which is used with ASTM D-2041. The unit is mounted on a round metal base with opposing vacuum connections. This allows the manometer to be connected between the pump and vacuum chamber. The manometer has a range of 0 to 150 mm Hg. The scale reads 75 to 0 to 75 mm Hg in 1mm divisions. The G8279A Bleed Valve goes in-line in your vacuum system. Easily installs and allows you to precisely control the amount of vacuum applied during a test.
