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Steam pressure gauge labeled "Ashton/ Boston, U.S.A./ Lane Bourdon". Scale 0-250.  →

Steam pressure gauge made for Babcock & Wilcox Co. labeled "Crosby/ Boston, U.S.A./ AA". Scale 0-400.  →

Steam pressure gauge made for International Eng. Works, Inc. labeled "Crosby/ Boston, U.S.A./ AA". Scale 0-250.  →