Rail expansion gauge, British Railways

Made:
1960 in London
maker:
Negretti and Zambra

Rail expansion gauge, calibrated against thermometer, degrees Fahrenheit, nil expansion at 100 degrees, for 60 foot rail length, British Railways, copper body, made by Negretti & Zambra, in fitted wooden case marked "P.Way Insp Thirsk" [Permanent Way Inspector Thirsk].

Related people

Details

Category:
Tools of the Trade & Personal Accessories
Object Number:
2006-7458
Materials:
brass (copper, zinc alloy), glass
type:
rail expansion gauge
credit:
Swift, John

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