Barometric pressure range is 954 to 1073 millibars (mbar), 28.1 to 31.7 inches of mercury (inHg) and 715 to 805 millimeters of mercury (mmHg) Resolution is 0.5 mbar, 0.05 inHg and 0.5 mmHg Accuracy is ±0.5% of reading Dial barometer measures 4 1/2” diameter by 1…

Accurate and durable 60-minute timer with sturdy case and protective covers to prevent corrosion. Two three-wire outlets allow automatic switching of external devices. The Model 171 60-Minute Timer provides precise timing for industrial and laboratory work with second- and minute-hand…

Accurate to 1/10,000 of a second Automatically adjusts for daylight savings time Large digits are easy to read, even from far away Clock receives a controlling radio signal from NIST's atomic clock in Colorado to maintain accuracy and automatically adjust for daylight savings time…

pH/ORP Sensor protective cap Memory for 20 readings Display prompts for simple pH calibration Temperature compensation This meter has a reading accuracy of ±1%, which has been achieved through advanced four-electrode conductivity cell technology, a unique pH/ORP sensor…

20 ~ 100% RH scale on 4" dial. Uses a precise synthetic hair hygrometer with an accuracy of ±5%. Inner dial shows temperature using a bimetal thermometer, with an accuracy of ±2°F. N.I.S.T. traceable certificate of compliance available: 736920C

Accurate and durable 15-minute timer with sturdy case and protective covers to prevent corrosion. Two three-wire receptacles allow automatic switching of external appliances. The Model 172 15-Minute Timer provides precise timing for industrial and laboratory work with second- and minute-hand…

Autoranging Adjustable temperature control Powerful microprocessor-based surface-mount circuitry Memory for 20 readings Data back up system Low battery indicator Fast and accurate, the Ultrameter delivers performance of ±1% of reading. Factory calibrated with…

Solid state digital 99-minute timer is an excellent choice for factory, lab or studio use. Two independent, programmable memories for single cycle switching or continuous cycling. The Model 451 solid state digital timer is an excellent choice for factory, lab or studio use. It has two…

Large, clear, dual scale Four inch dial is easy to read from a distance Gives readings in hecto Pascal (hPa) from 940 to 1060 readable to 1 hPa and mm of Hg pressure from 71 to 80 readable to .1mm. Barometer has an accuracy of ±± hPa. Complete with wall mounts. Weight: 2.6 oz.

Ideal for washdown areas Modern, easy-to-read design Displays temperature from -4 to 104°F (-20 to 40°C) An o-ring sealed, waterproof/dustproof ABS impact-resistant case makes this clock ideal for wash-down areas, outdoors and many other harsh environments. Modern style clock features large…

NIST traceable Large, 10" dial Quartz-crystal timing Clock has 0.01% accuracy. Thermometer range is -20° to 55°C (10° to 130°F) with ±1.5° accuracy. The hygrometer measures humidity from 0 to 100% with ±5% RH accuracy. Includes an NIST traceable certificate and one AA battery.

Supreme Precision Instrument, Metric and English Scales Vernier calipers can be used to measure internal and external dimensions with utmost precision. Precise measurements can be made with the fine adjustment thumb roller, and reading scales create no parallax. Parallel jaws are 40mm…

Sleek, low-profile design Triple display with superior visibility The ultra-modern, stylish clock has crisp, highly visible dials that can be read at 25 feet. The large 9" clock face has a bright orange, sweeping second hand for superior visibility. The 3" thermometer dial displays…

Easy-to-use, durable meters Automatic temperature compensation Built-in electrodes never need replatinization Sealed against moisture Can be used in both field and laboratory applications Meters are simple to use. First, rinse and fill the sample cup. Next, select the range. Then press the…

Of strong polymeric plastic Suitable for student use and other non-critical applications Combination inside-outside caliper with depth stem Graduated to 150mm in 0.1 mm increments and to 5 1/4" inches in 0.05” increments 33mm (1.3") diameter dial is rotatable beneath…