Two steam locomotive indicators

maker:
Crosby Steam Gauge and Valve Co.

Steam Locomotive Indicators, two Crosby Indicators in wooden case marked: "Crosby Steam Gage & Valve Co. Boston Pat'd Sept.2 1829". Used for measuring steam pressure in cylinders.

Details

Category:
Tools of the Trade & Personal Accessories
Object Number:
1987-8427
Materials:
wood (unidentified)
type:
steam locomotive indicator
credit:
British Rail, Historical Relics