Extech 407766 94/114 dB Sound Calibrator, Analog, Aluminum, 9V battery

Extech 407026-NIST Heavy Duty Light Meter W/PC Interface, Battery, 1.3"W, NIST Certified Heavy duty light meter has 4 lighting type settings for enhanced accuracy (Tungsten/daylight, florescent, sodium, mercury). Additional features include: data hold, min/max/average, auto power off and a % reading of the differential from a reference point. Built-in RS-232 interface with optional data acquisition software and datalogger. Includes: NIST Cert 9v battery Remote light sensor on a 46 In. cable with protective cover and a protective holster with stand

Extech AN100-NIST CFM/CMM Mini Thermo-Anemometer, Green/Orange, 1.3"W NIST Certified CFM/CMM Thermo-Anemometer can simultaneously display of air flow or air velocity plus ambient temperature. Easy to set area dimensions (cm2) are stored in the meter's internal memory for the next power on. Features: 20 point average for air flow and 3% velocity accuracy via low friction 2.83 In. D (72 mm) ball bearing vane wheel on 3.9 ft (120 cm) cable Comes complete with 9v battery, protective rubber holster, case and NIST Certificate

Ideal for monitoring environmental conditions (temperature, humidity and dew point) in laboratories, storage areas, manufacturing assembly areas and other controlled environments, the humidity alert meter features a user settable alarm and will warn you, both audibly and visually, when adverse conditions occur. High humidity can create a breeding ground for mold and low humidity can create static electricity. The 445815 also displays the dew point reading which is a calculation of temperature and humidity and used to determine when condensation will occur. The humidity alert meter ...

Extech 407119 Heavy Duty CFM Hot Wire Thermo-Anemometer, Blue, Probe Sensor, 7.9"L Heavy duty CFM hot wire thermo-anemometer uses a telescoping probe (extends up to 3 ft) that's ideal for use in ducts and ventilating systems. It can accurately measure air flow (CFM/CMM), air velocity and temperature. Air flow can be displayed as an instantaneous value or up to a 20 point average. A built-in RS-232 interface can be used with optional data acquisition software and cable for recording measurements directly to your PC. Comes complete with telescoping probe with 5.5 ft cable and 4 x AA ...

Extech DO600 Waterproof ExStik® II Dissolved Oxygen Meter, Wide-Band Sensor Oxygen level displayed as % saturation from 0 to 200.0% or concentration from 0 to 20.00ppm (mg/L). Adjustable altitude compensation (0 to 20,000 ft. in 1,000 ft. increments). Adjustable salinity compensation from 0 to 50ppt. Analog bargraph indicates trends. Memory stores up to 25 data sets with do and temperature reading. Self calibration on power up, data hold, auto power off and low battery indicator. Waterproof to PIP57. Features: Electrode Protective sensor cap Spare membrane cap Electrolyte Four 3 V CR-2032 ...