NEW LIQUID/GLYCERIN FILLED VACUUM AIR PRESSURE GAUGE.1.5" FACEWITH 1/8" MALE NPT CONNECTION. CENTER BACK MOUNTED. High Quality Line Of Liquid Filled Gauge. Which Will Extend The Life Of The Gauge.
try your local refrigeration / air conditioning place, they'll have vacuum guages for the fridge pipework tests, they'll probably have what you need in stock.