Differential feature registers the pressure or vacuum difference between two different sources, and memory feature recalls highest and lowest readings over any time period.

• Traceable®
• Measures in 11 units

A serial numbered certificate is provided from an ISO 17025 calibration laboratory accredited by A2LA to indicate instrument traceability to standards provided by the National Institute of Standards and Technology.

Manometers display differential pressure or vacuum readings in 11 different units: psi, mbar, bar, cm/H₂O, in./H₂O, ft./H₂O, mm /Hg, in./Hg, kg/cm², oz./in.², and kPa, with a response time of 0.5 seconds. Simple hose fittings permit use of tubing with inside diameter from 0.63–1.9mm (¹/₁₆ to ³/₁₆"). Large 6.3mm (⁵/₈")-high digits are visible from 1.8m (6') away. Unit may be zeroed with the touch of a button. Count-up timer displays times up to 99 hours, 59 minutes, 59 seconds. Data hold key freezes the display to capture readings.

Brilliant backlighting permits reading even in dark areas. ABS plastic case.