DescriptionThis is a air pressure gauge. This gauge can be used to measure air, water, oil, gas, and anything else that is not corrosive to brass. This is a steel gauge with steel bezel.Feature-Color: As Shown. - Material: Metal and plastic - Size: 5.1x4.5x4.5cm - Clear number markings for convenient and easy readings.- Metal outer case, well protect the inner accessories.- Mini size, convenient to carry.- This gauge can be used to measure air, water, oil, gas, and anything else that is not corrosive to brass. - Warm Tip: Dear buyer, due to lighting effect, monitor's brightness, manual measurement, etc., there could be some slight differences in the color and size between the photo and the actual item. Sincerely hope that you can understand! Thank you!