'Vacuum Gauge, Test, 4-1/2 In., Basic Gauge Case Material Aluminum, Basic Gauge Wetted Parts Bronze, 1/4 In., MNPT, Gauge Connection Location Bottom, 30 to 0, In. Hg, +/-0.25 Percent, Gauge Panel Mountable No, Liquid Filled No, Gauge Primary Range Smallest Graduation 0.1, Gauge Case Material Epoxy Coated Aluminum, Gauge Case Color Black'