MEANLIN MEASURE 0~10Psi Stainless Steel 1/4" NPT 2.5" FACE DIAL Liquid Filled Pressure Gauge WOG Water Oil Gas Center Back Mount, with 1/4" x 1/2" NPT and 1/4" x 3/8" NPT Hex Bushing : Industrial & Scientific - Amazon.com
4inch Dial -0.1MPa to 0 Liquid Filled Vacuum Gauge - China Liquid Filled Gauge, Vacuum Gauge | Made-in-China.com
26 Gallon Moonshine Still with 4" Borosilicate Sight Glass 4 Plate Col – Affordable Distillery Equipment