6685-00-641-8526 (79-5033G1)
NSN 6685-00-641-8526 (NIIN 00-641-8526) is a plug humidity indicator in Federal Supply Class 6685, Pressure, Temperature, And Humidity Measuring And Controlling Instruments — an item which uses the changing color of a desiccant in the presence of moisture to indicate humidity. Manufacturer part number 79-5033G1 (Raytheon Company, CAGE 3B150); also referenced as MS3397-11 (Military Standards); 1178 (Triumph Engine Control Systems LLC).
Key specs: refillable; full characteristics table below. NIIN assigned January 1963; DEMIL A (none required); unit of issue EA (each), $5.04 gov standard price; export Schedule B 9025.80.5050. Supersedes 6685-00-526-8413 (1977), 6685-00-498-0197 (1971).