401025-NIST / Extech เครื่องวัดแสง Light Meter Measures light levels to 5000 Fc (Foot-candles) and 50,000 Lux with 5% accuracy. This product includes a Traceable Certificate with full Data and Uncertainties.
401036-NIST / Extech Datalogging Light Meter With Calibration Certificate Capture and transfer up to 16,000 readings with selectable sampling rate.Maximum reading and data hold plus low battery indication
407026-NIST / Extech Heavy Duty Light Meter with PC Interface FC/LUX with NIST Calibration Microprocessor assures maximum accuracy plus special functions.Super large 1.4" LCD display
407113-NIST / Extech เครื่องวัดความเร็วลม Anemometer Display Air Flow (CFM) or Air Velocity plus Temperature simultaneously.Super large (9999 count) LCD display.
407119-NIST / Extech Heavy Duty Hot Wire CFM Thermo-Anemometer with NIST Calibration Accurately measure Air Flow (CFM/CMM) or Air velocity plus °F/°C Temperatureb
407123-NIST / Extech เครื่องวัดความเร็วลม Anemometer Telescoping probe is ideal for measuring in HVAC ducts and other small vents.Extends up to 7ft (2.1m) maximum length with cable.