Original oil and gas trade magazine vintage ad for AMERICAN MACHINE & METALS, INC., of Sellerville, PA. United States Gauge. Manufacturer of process gauges, solid front gauges, general utility gauges, test gauges, dial thermometers, pneumatic controllers, pneumatic transmitters, pneumatic receivers, recorders and recorder controllers. This unique 1959 old petroleum oilfield and refinery process instrument equipment industry magazine advertisement would look fantastic matted and framed.