Features This vacuum gauge is a dial gauge with dual scales. It is a stable air pressure measurement tool. The port is on the back of the pressure gauge. Its measuring range is 0~-30inHg or 0~-1bar. Metal case, well protects internal accessories, mini size, easy to carry. Wide range of applications - water, oil, air, etc. Descriptions: This vacuum manometer is a dial instrument with double scale. The interface is on the back of the pressure gauge. Its measurement range is 0~-30inHg or 0~-1bar , Broad applications - water, oil, air and more, is a great air pressure measuring tool with stable performance. With mini size, it is convenient to carry. Features:  -This vacuum gauge is a dial gauge with dual scales. It is a stable air pressure measurement tool. -The port is on the back of the pressure gauge. -Its measuring range is 0~-30inHg or 0~-1bar. -Metal case, well protects internal accessories, mini size, easy to carry. -Wide range of applications - water, oil, air, etc. Specifications: Material: Metal Color: Black Measurement Range: 0~-30inHg / 0~-1bar Thread specification: BSPT Connection: 1/4" BSPT Thread Appearance diameter: 50mm Size: as the pictureWeight: 89g Package List