For sale is a Marshalltown Precision Vacuum Gauge. 0 To -30" Hg (0 to -100kPa) scale. 1/4 of 1 percent rated accuracy. Adjustable "0" point. 6-5/16" Overall diameter of gauge face. 7-9/16" Diameter integrated mounting flange. Made in the USA. NOTE: This USG Precision Vacuum Gauge is in excellent condition, and I cannot tell if it was ever installed for use. Comes with OEM cardboard box.