Pressure gauge: This pressure gauge is a dial instrument with double scale, 0-20bar/0-300psi to meet your different needs. 1/8 inch BSPT THREAD: This pressure gauge adopts the 1/8 inch BSPT thread connection, convenient to assemble and widely used. Metal case: external metal housing, well protect the interior accessories, extend the service life. 4.2 cm clear compartment plate: This pressure gauge has a 4.2 cm dial plate, clear number marks for easy and convenient readings. Wide applications: The water pressure gauge can be used to measure air, water, oil, gas and other things that are not corrosive to brass., Weight: 0.13 pounds, Manufacturer: Hilitand