A large early 20th century pressure gauge with brass bezel by Dewrance of London.

Dial marked: 0 – 200 pounds per square inch.

0-25-50-75-100-125-150-175-200 POUNDS PRESSURE PER □ INCH

Diameter: 35 cm.

Depth: 7.5 cm.

Dewrance & Co. Ltd was a manufacturer of engine and boiler accessories, established in 1875.