Check the listing for details. TRACEABLE 4199 Precision Barometer 3KYD8. Condition: New. Listed at 189.36 USD. Precision Barometer, Pressure Range (in Hg) 28.1 to 31.7 in Hg, Pressure Range (hPa) 945 to 1073 hPa, Pressure Range (mm Hg) 715 to 805 mm Hg, Accuracy +/-0.5 Percent, Response Time 1 to 4 hr, Mounting Location Wall-Mount, Overall Depth 1 1/2 in, Overall Diameter 4 1/8 in, Includes NIST-Traceable Calibration Certificate Yes, Scale Type Analog, Scale Units hPa, in Hg, mm Hg, Adjustable Pointer Yes, Altitude Adjustment Screw Yes, Corrosion Resistant Yes, Dial Color White The highly reliable Traceable(R) precision dial barometer features triple scales-sensitive measures of atmospheric pressure in millibars, inches of mercury, and millimeters of mercury-with a response time of 1 to 4 hr. Accuracy is +/-0.5% of reading. Pointer is adjustable to indicate changes. Rugged corrosion-proof, nickel-.