TPI INSTRUMENTS DC710 Flue Gas Analyzer 708 Combustion Efficiency Analyzer with Flue Probe 709R Combustion Efficiency Flue Gas Analyzer TPI Model 9070 Smart Vibration Analyzer 9071 Smart Vibration Meter BNC Cable Accelerometer with Magnet 9080 Vibration Analyzer 265 Digital Clamp Meter 270 Digital Clamp Multimeter 293 Digital Clamp Meter Amp Plus