The OMEGA Engineering  HHP350 Series smart manometer is a high-performance handheld digital manometer with many features, including:
- An accuracy of 0.05 percent (HHP351) and 0.025 percent (HHP352) full scale, independent of temperature.
- The display of 11 different pressure scales, as well as 1 user-defined scale.
- Minimum/maximum capture, display damping and hold, automatic shutoff and a backlit display.
- Leak testing on all standard features.
- Manual or automatic storage of up to 240 readings for future recall.
- NIST-traceable calibration certificates.
- Suitability for HVAC and automotive industries.