Extech 445702 Hygro-Thermometer Clock, White, Wall Mount, AAA Battery

Extech 401025 Foot Candle/Lux Light Meter, Battery, 1.2"W Foot candle/lux meter measures light level to 5000FC (foot candles) and 50,000 lux with a 5% accuracy using a precision photo diode and color correction filter. It features fast/slow response time and an analog output (1mV per count) for capturing readings to a recorder. Complete with: 9v battery

Extech 407766-NIST 94/114 dB Sound Calibrator, Analog, Aluminum, 9V battery NIST Certified Sound level calibrators at 94 dB or combination 94 dB/114 dB, 1 kHz professional calibrator for 0.5 In. or 1.0 In. microphones. Housed in a durable die-cast aluminum. Complete with: Two 9v batteries Carrying case Screwdriver NIST Certificate

Extech 407732-KIT-NIST Low/High Range Sound Level Meter Kit, Plastic, 9V battery, NIST Certified Type 2 Sound Level Meter Kit meets ANSI and IEC 651 Type 2 standards. Ideal for noise surveys in the workplace, installing fire alarms and speaker systems and enforcing noise ordnances. Measures from 35 to 130dB in two ranges with an accuracy of ±1.5dB. Data hold and Max hold functions. Backlit display allows use in dimly lit areas. Kit Includes: 407732 sound meter 407744 94dB Sound Calibrator Microphone wind screen 3 x 9V batteries NIST Cert Hard carrying case

Type 2 Sound Level Meter Kit meets ANSI and IEC 651 Type 2 standards. Ideal for noise surveys in the workplace, installing fire alarms and speaker systems and enforcing noise ordnances. Measures from 35 to 130dB in two ranges with an accuracy of ±1.5dB. Data hold and Max hold functions. Backlit display allows use in dimly lit areas. Kit Includes: 407732 sound meter 407744 94dB Sound Calibrator Microphone wind screen 3 x 9V batteries Hard carrying case

Extech TM100-NIST Type K/J Single Input Thermometer, Orange/Green NIST Certified Model TM100 measures type K temperature to 2501°F (1372°C) and features unique side-button controls for convenient one-hand operation. Functions include: readout in °F, °C, or K (Kelvin), data hold, min/max/average with timestamps and an offset key used for zero function to make relative measurements. Complete with: Type K bead probe NIST Cert 9v battery