30 inHg Vacuum Silicone Oil Liquid Filled Low Pressure Gauge, 2.5" Dial Size, 1/4" NPT Lower Mount, Stainless Steel Case, for Air Conditioning Manifolds, HVAC, Air Pump Vacuum Test

Brass and Stainless Steel wetted parts for measuring non-corrosive liquid and gas pressure.

Such as water, oil, air pressure test.

Compatible with air conditioning line repair, tank, hvac tools, air pump, pipe, tube vacuum test and etc..

Circular dial is enclosed in a 304 stainless steel case for corrosion resistance.

Liquid filled inhibits pointer flutter and prevents damage to the internal mechanics from vibration and pulsation.

Freeze Resistant: Silicone oil ensures long-ter