Salvaged from a ship, this brass "Compound Pressure" gauge is around 75 years old, signed "Sydney Smith & Sons, Birmingham, England."
Red vacuum numbers in inches of mercury and black "Lbs. per inch" also have a metric scale on this antique nautical instrument. The paint on the dial is deteriorated from age, see photos. We do not know if this is in working condition.
Size is 8 1/4" diameter and 2" deep.
See 7 photos on Harp Gallery website that enlarge to full screen size.
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