. Canadian machinery and metalworking (January-June 1919). cube root, temperature conversioitables, areas and circumferences of circles, trigonometrical functions, taperand angles and logarithms. The above tables are those usuall;found in works of this type, and in addition to these some extremely usefutables are given, which are seldom seerThese have to do with the coefficient ofriction of various materials, revolutionof wheels or discs per minute, and thcentrifugal force exerted by a rotatin;mass of one pound, at various speedsetc. Wire gauge tables, specific gravity another weight tables, t


. Canadian machinery and metalworking (January-June 1919). cube root, temperature conversioitables, areas and circumferences of circles, trigonometrical functions, taperand angles and logarithms. The above tables are those usuall;found in works of this type, and in addition to these some extremely usefutables are given, which are seldom seerThese have to do with the coefficient ofriction of various materials, revolutionof wheels or discs per minute, and thcentrifugal force exerted by a rotatin;mass of one pound, at various speedsetc. Wire gauge tables, specific gravity another weight tables, thread tables another tables dealing with the propertieof materials are included. The sections dealing with trigonometry mechanics, statics and logarithmstogether with that on mensuration, ar>of particular value, and while the boois of 125 pages, much information o,real value has been condensed intosmall space and the book should prova welcome addition to the referenclibrary of those who have occasion tuse material of this nature. January 30, 1919 111. WHAT OUR READERSTHINK AND DO


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Keywords: ., bookcentury1900, bookdecade1910, booksubjectmachinery, bookyear19