Hand book of calculations for engineers and firemen : Relating to the steam engine, the steam boiler, pumps, shafting, etc. . er saw. Geo. Gatliff, Chama, JV. what I wanted. Thomas Anson, Sioux City, la. I received Part III. all right. It was a pleasant patent self-binding cover is just the right thing. W. E. Sydney, Frankfort, Indiana. It gets better with each new part. F. H. Roberts, Hyde Park, N. Y. I think it the greatest work published for the education ofthe engineer. Pratt A. Courtright, IJark Lake, Mich. - The books are all you claim for them; the rule in Part
Hand book of calculations for engineers and firemen : Relating to the steam engine, the steam boiler, pumps, shafting, etc. . er saw. Geo. Gatliff, Chama, JV. what I wanted. Thomas Anson, Sioux City, la. I received Part III. all right. It was a pleasant patent self-binding cover is just the right thing. W. E. Sydney, Frankfort, Indiana. It gets better with each new part. F. H. Roberts, Hyde Park, N. Y. I think it the greatest work published for the education ofthe engineer. Pratt A. Courtright, IJark Lake, Mich. - The books are all you claim for them; the rule in Part multiplying by .7854 is worth its price. G. M. Fair child, San Francisco, Cal. - \<». .) of fche Hand Booi of Calculations just hits the nailon the h<ad. The editors motto seems to be i Excelsior/ andwhen he climbs the mountain to the loth number he can planthis standard on the top and reel satisfied that his labors have duly appreciated by those he has made wiser. Mathematical Drawing Instalments. SOLD E~5T THEO. AUDEL & CO., PUBLISHERS, BOOKSELLERS, S»C. Publication Office 3,91 Liberty Street, New The New Handy Drawing Board, T and SettSquares {outfit). Every draftsman finds a drawing board, a T-square, and one ormore triangles, as essential to his work as does the new beginner inmechanical drawing. The New Handy Drawing Board • outfit,; is intended for use athome, in the class-room, office and shop its wide use will be productiveof good to aspiring engineers and mechanics ; no investment can bemore judicious than the small cost represented by this • outfit, afew tools and a book of instruction on drawing. As shown in the illustration, the No. 1 outfit consists of a boardabout ten by twelve inchps, to which a pad of drawing-paper is fas-tened, and a wooden T-square and triangles of suitable size. The MATHEMATICAL DRAWING INSTRUMENTS. draftsman fastens the piece of paper on which he is working to hisdrawing-hoard by means of thumb-tacks, but this method 1
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