describe product Description: To prevent damage to inflatable boats due to overpressure, and to ensure personal safety, it is important to monitor and maintain air pressure at the proper level with a pressure gauge. Our manometer can do it for you. It is versatile and practical. The digital display is clear and bright, providing readings up to 5.08 psi or 0.35 bar. Long Tube Adapters are available for advanced pressure measurements on high pressure air pumps such as West Marine or Bravo. attention! Hot weather increases air pressure and cold weather decreases air pressure, so it's important to recheck air pressure. parameter: Material: PVC, iron, copper Size: about 9.5*6.5cm / 3.74*2.56in Weight: about 75g Application: Used for testing pneumatic valve joints in inflatable kayaks. Features: It provides readings up to 5.08 psi or 0.35 bar. Clear digital numbers displayed are easy to read. Rubber-armored instrument housings provide better protection. It has a long hose adapter for HR valve and pump hose. It fits West Marine or Bravo high pressure air pumps. It is compact and easy to carry. packing list: 1*Basketball Barometer Precautions: 1. The meter is not waterproof; please protect it from water immersion. 2. Due to manual measurement, 1-3cm error is allowed. Make sure you don't mind before going to bed. 3. Due to the difference of different monitors, the picture may not reflect the actual color of the item.