40 79 00 Miscellaneous Instruments, Calibration Equipment, Instrument Valves, and Fittings
40 79 66 Instrument Valve Manifolds, Valves, and Fittings
40 79 13Nuclear Mass-Measuring Scales40 79 23Instrument Calibration Equipment40 79 26Instrument Programming Equipment40 79 33Current-to-Pressure Converters40 79 36Voltage-to-Pressure Converters40 79 39Signal Conditioners and Converters40 79 43Deadweight Testers40 79 46Flame Scanners40 79 63Instrument Tubing40 79 66Instrument Valve Manifolds, Valves, and Fittings