6685-00-527-6754 (E3213-2PCTR28)
NSN 6685-00-527-6754 (NIIN 00-527-6754) is a vertical tube manometer in Federal Supply Class 6685, Pressure, Temperature, And Humidity Measuring And Controlling Instruments. Manufacturer part number E3213-2PCTR28 (King Engineering Corporation, CAGE 33667); also referenced as E3600TR28, TDRN28, TR28 (King Engineering Corporation).
Key specs: zero adjuster, indicating liquid; 20 psi maximum operating pressure; full characteristics table below. NIIN assigned January 1963; DEMIL A (none required); export Schedule B 9026.20.0000.