Features: Professional Digital Handheld Manometer with ±0.3% accuracy for precise differential, Gauges, and absolute pressure measurements in HVAC systems and industrial applications. Features a 2.8" backlit LCD, IP54 rate hard design, and USB data export for easy analysis in lab or fieldwork. Essential tool for HVAC technicians, laboratory engineers, and industrial maintenance professional requiring reliable pressure diagnostics. measure gas/liquid pressure in ventilation systems, hydraulic machinery, Medicinal molding, and natural gas pipelines with 0.01 resolution. Small ergonomic design stores 100 datasets and operates on 9V power for Easy Carry pressure testing in extreme environment. Specifications: Material: ABS. Size: approximately 160x68x36mm/6.3x3x1.4inch Package Includes: 1 set Digital Pressure Meter note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the differences between different monitors, the picture may not reflect the actual colorful of the item.