#Busch-Sulzer Diesel Engine Thermometer – Jacket Water Discharge – Brass & Porcelain Mount

Offered here is an authentic marine engine room thermometer manufactured for the Busch-Sulzer Bros. Diesel Engine Co., St. Louis by the Marsh Instrument Company, Chicago.

• Measures jacket water discharge temperature in Fahrenheit (60–180°F)

• Original brass bezel with glass dial cover

• Mounted on a decorative shield-shaped white porcelain backboard (later display mount)

• Dial clearly marked: Busch-Sulzer Bros. Diesel Engine Co., St. Louis – Marsh Instrument Co., Chicago

• A fine piece of nautical engineering history, once used to monitor cooling systems on large marine diesel engines

Condition

• Gauge face shows some natural age patina, numbers remain clear and legible

• Brass bezel with expected wear from age

• Mounted on white shield backboard for display

• Untested as a working thermometer; sold as collectible display piece

Dimensions

• Overall with mount: approx. 8.5" x 8.5"

• Dial: approx. 4.5" diameter