Canadian machinery and metalworking (January-June 1919) . An electric machine for marking; tools and metal articlesfor identification purposes, etc. Requires no acid—usesonly electricity—lasts indefinitely. Write us to-day for literature and state cur rent availableWilliam Brewster Co., Inc., 30 Church Street, New Yorkresentative for Great Britain : Geo. H. Alexander, Birmingham, EngH. E. Streeter, Montreal, representative in Machinery Co. of America, Overseas Representatives—except British.

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Keywords: ., bookcentury1900, bookdecade1910, booksubjectmachinery, bookyear19