General Tools DMM830HSCERT - NIST Calibration Certificate - Economy Digital Multimeter emphasis is on the economy part of economy digital multimeter. General Tools DMM830HSCERT Economy Digital Multimeter features a simple single lead hotside identification with bright red LED. Formerly Mannix Instrument.

General Tools DNGD172PCERT - NIST Calibration Certificate - Digital Natural Gas Detector is a gas leak detector. General Tools DNGD172PCERT Digital Natural Gas Detector is an intrinsically safe combustible gas indicator. Formerly Mannix Instrument. Free ground shipping within continental US.

General Tools DOM22CERT - NIST Calibration Certificate - Dissolved Oxygen Meter provides automatic temperature compensation. This dissolved oxygen sensor comes with a Precision Polargraphic Probe for DO. Formerly Mannix Instrument. Discontinued product.

General Tools DPH8690CERT - NIST Calibration Certificate - Field Calibratable pH Instrument simultaneously displays pH and temp. The field calibratable pH instrument has an automatic calibration at the touch of a button. Formerly Mannix Instrument.

General Tools DPHO1380KCERT - NIST Calibration Certificate - pH ORP Conductivity Meter Data Logger provides fast and easy pH measurement. This water quality testing pH conductivity meter's dual LCD display shows pH/C & F or mV/C & F simultaneously. Formerly Mannix Instrument.

General Tools DPT300ECERT- NIST Calibration Certificate Digital Thermometer is a digital Anti-roll Thermometer. It has time-saving instant one-second updates.

General Tools DPT392FCCERT Digital Pocket Thermometer is a Digital Pocket Min to Max Thermometer. This digital probe thermometer is water resistant.

General Tools DSM8925CERT - NIST Calibration Certificate - Digital Sound Meter's digital display with analog bar graph makes test results clear. General Tools DSM8925CERT Digital Sound Meter is a reliable noise level meter. Formerly Mannix Instrument.

General Tools DSM8928CERT - NIST Calibration Certificate - Digital Sound Meter, a noise level meter, provides a digital display with analog bargraph. General Tools DSM8928CERT Digital Sound Meter has the benefit of a large 3.5 digit LCD display. Formerly Mannix Instrument.

General Tools DST570CERT- NIST Calibration Certificate Digital Stem Probe Thermometer is a Digital Surface Probe Thermometer (high range). It features a 1 sec normal temperature sensing time.

General Tools DT160ACCERT - NIST Calibration Certificate Digital Laboratory Thermometer has a temperature alarm function with high and low limits. This digital probe laboratory thermometer has audible and visual alarm set points. Formerly Mannix Instrument.

General Tools DT310LABCERT- NIST Calibration Certificate Digital Stem Probe Thermometer is a Digital Lab Thermometer. This digital probe thermometer comes with Stainless steel probe and sheath. Formerly Mannix Instrument.