U.S. Navy High-Pressure Gauge James P. Marsh Corporation

US Navy pressure gauge, most likely from naval or industrial use. The marking "Jas P Marsh Corp Chicago" refers to the James P. Marsh Corporation, based in Chicago, Illinois.

About the company:

• Founded in the late 1800s, James P. Marsh Corp was a well-known manufacturer of industrial gauges and instruments, especially steam pressure gauges.

• They supplied gauges, meters, and related equipment for locomotives, ships, factories, and power plants.

• Their products were widely used by the U.S. military, Navy, and merchant marine during the early-to-mid 20th century.

Size: 7 inches long and 6 inches wide.

Features:

• Dial face: Reads from 0 to 3000 psi (pounds per square inch).

• Needle indicator: Standard gauge design for showing pressure level.

• Brass bezel: Durable, corrosion-resistant, typical of gauges used in maritime or heavy industrial settings.

• Mounting on wood: Suggests it has been preserved or displayed as a collectible piece rather than still in service.

• Inspection plate: The tag reads “U.S. Navy – Qualified”, which confirms this was military-issued equipment.

Purpose:

• Would have been used on a naval vessel to monitor high-pressure systems, such as:

  • Steam boilers powering ship engines.

  • Compressed air systems for torpedoes or hydraulics.

  • Other high-pressure machinery on board.