Ashton Steam Pressure Gauge Steam pressure gauge labeled "Ashton/ Boston, U.S.A./ Lane Bourdon". Scale 0-250. →
Crosby Steam Pressure Gauge Steam pressure gauge made for Babcock & Wilcox Co. labeled "Crosby/ Boston, U.S.A./ AA". Scale 0-400. →
Crosby Steam Pressure Gauge Steam pressure gauge made for International Eng. Works, Inc. labeled "Crosby/ Boston, U.S.A./ AA". Scale 0-250. →