. Locomotive engineering : a practical journal of railway motive power and rolling stock . Crescent PatternFixed Caliper Gauges. =r£ g Corrective GaugeStandard. These Tools havebeen in use for years,and improved fromtime to time. There are a greatmany first-class arti-sans using these toolsexclusively. The why and where-fore await your ad-dress. Right now isa good time to write. Precision. **. The John M. Rogers, Boat, Gauge and Drill Works, Gloucester City, IN. J., LOCOMOTIVE ENGINEERING. 190

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