Features: Circular dial is enclosed in a metal case for corrosion resistance. Easy to install and easy to use, make your work easier by giving you a clear reading. This pressure gauge is a great pressure measuring tool with stable performance. With NPT 1/4 inch thread connection, its measurement range is 0-100PSI / 0-7Bar. Measures pressure with dual scale (PSI/Bar), no batteries required. Specifications: Material: Metal Measurement range: 0-100PSI / 0-7Bar Color: As picture shown Thread Connection type: NPT1/4 inch Size: Approx. 7 x 5 x 2.8cm / 2.75 x 1.96 x 1.1inch Weight: Approx. 78g Package Included: 1 x Pressure Gauge Note: 1. If there is an emergency situation of explosion of bourdon tube, the internal pressure will be released to the outside through the overflow hole to prevent the glass panel from bursting. 2. In order to maintain the normal performance of the overflow hole, please leave at least 10mm space behind the table. Do not modify or plug the overflow hole.