To protect the steam-powered industry at the beginning of the industrial revolution. This is a 4.5" round and 1.75" deep gage.
Vintage American Radiator Company Gauge pat. 1910 Ashcroft Made in USA
Vintage American Radiator Company Gauge Ashcroft Made in USA Antique
ANTIQUE AMERICAN RADIATOR CO. GAUGE patent 1910 STEAMPUNK ARCHITECTURAL SALVAGE
American Locomotive Company 1957 Annual Report Alco
American Locomotive Company, Montreal Locomotive Works Catalog 10045 1918
