SCTSNSR -30 inHg to 0 Vacuum Pressure Gauge, Glycerin Liquid Filled, 2.5 inch Dial, 1/4" NPT Lower Mount, Stainless Steel Case, for Air Conditioning Line, Tank, Air Pump, HVAC, Pipe, Pressure Test

This pressure gauge is built with brass and stainless steel parts to measure pressure in liquids and gases that aren't corrosive, like water, oil, and air pressure tests. It's perfect for use with things like air conditioning line repair, tanks, HVAC tools, air pumps, pipes, tube vacuum tests, and more. The round dial is safely tucked into a 304 stainless steel case to resist corrosion. Internal filling of glycerin in the pressure gauge ensures stable pointer readings and safeguards internal mechanisms against vibration damage. Red Range Mark: Easy sliding on the dial allows for effortless adjustment. The arrow-shaped design indicates the upper and lower limits, providing a quick and clear visual reference to remind you to stay within the safe pressure range. The dial adopts a dual scale for pressure measurement (-30 inHg-0/-1 bar-0). Its display accuracy conforms to ± 3/2/3% of the span (ASME B40.100 Grade B). The IP67 waterproof rating prevents condensation, eliminating window fogging and ensuring consistently clear readings. The connection is a lower mount male type with a 1/4" NPT thread, making it easy to set up in various systems.