. Electric railway journal . Duff Ball Bearing ScrewJacks are adaptable to any lifting need. They arequicker, more durable and reliable and less ex-pensive than any other design of standard speedball bearing screw jack. Duff Bethlehem ForgedSteel Hydraulic Jacks embody the best there is in the hydraulic jackprinciple but avoid many of the troublesome im-perfections of usual hydraulic jack leaks are avoided, tripping is made easyand perfectly true foundations are made unnec-essary with these jacks. In Buff Mm Established 1883 PITTSBURGH, PA. 50 Church St., New YorkPeoples G
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