. Canadian machinery and metalworking (January-June 1919). W**.ii DEVELOPMENTS INSHOP EQUIPMENT. Makers of equipment and devices for use in machine shop and metal workingplants should submit descriptions and illustrations to Editorial Department for review in this section. * THE PRECISION MEASUREMENTOF THREAD GAUGES FAR reaching advances have beenmade in the past few years in theprecision measurement of gauges,etc., upon which the accuracy and inter-changeability of the products of themodern machine shop depend for theirusefulness. The National Physical La-boratory of Great Britain and latterl
. Canadian machinery and metalworking (January-June 1919). W**.ii DEVELOPMENTS INSHOP EQUIPMENT. Makers of equipment and devices for use in machine shop and metal workingplants should submit descriptions and illustrations to Editorial Department for review in this section. * THE PRECISION MEASUREMENTOF THREAD GAUGES FAR reaching advances have beenmade in the past few years in theprecision measurement of gauges,etc., upon which the accuracy and inter-changeability of the products of themodern machine shop depend for theirusefulness. The National Physical La-boratory of Great Britain and latterlythe Bureau of Standards of the UnitedStates have investigated the subject ofthread gauges extensively, and as a re-sult of their researches apparatus andmethods have beendeveloped for testingwith a high degree ofaccuracy. As might be expect-ed, manufacturers ofthread gauges haveavailed themselves ofthe facilities affordedthem and have senttheir gauges to theBureau of Standardsfor testing, but it hasonly been recentlythat the equipmentnecessary has beenmade available forprivate use. TheArthu
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectmachinery, bookyear19
