Hand book of calculations for engineers and firemen : Relating to the steam engine, the steam boiler, pumps, shafting, etc. . e sheet, being unusually thick, so as to ^llow it to have a hold onthe board when the pad is of full thickness. The two triangles, com-monly called the 45° and (50 triangles, include all the standard angles,00 , 45 . 00 and 30 , ordinarily needed by draftsmen. As a convenience in keeping the several pieces of the set togetherthe back of the board is provided with grooved cleats and the crosscleats at the two ends of the board are slotted to receive the tongue ofthe T-sq
Hand book of calculations for engineers and firemen : Relating to the steam engine, the steam boiler, pumps, shafting, etc. . e sheet, being unusually thick, so as to ^llow it to have a hold onthe board when the pad is of full thickness. The two triangles, com-monly called the 45° and (50 triangles, include all the standard angles,00 , 45 . 00 and 30 , ordinarily needed by draftsmen. As a convenience in keeping the several pieces of the set togetherthe back of the board is provided with grooved cleats and the crosscleats at the two ends of the board are slotted to receive the tongue ofthe T-square, so that when all the pieces are in place they are securelylocked together, as shown. This arrangement makes it impossibletor any of the parts to be lost or broken while the board is not in use,provided they are properly packed in their places. Tin- No. 2 outfit is double the size of No. 1, being particularly de-d for advanced students and draftsmen. element of aeeuracy has been very carefully considered inmaking the drawing outfit, and it is offere I at a price so low that noone can afford to do without Prices, post paid. Outfit N. l consists of Board (10xl2J inches), pad of 80 sheetsdrawing paper, i T Bquareand 3 triangles or set! squares 65cts. Outfit No. -i. consiste «»f Board (18x19 inches), pad of 30 sheets ofdrawing paper, l T square and 2 triangles oi Betl squares-$ MATHEMATICAL DRAWING INSTRUMENTS.
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License: Licensed
Model Released: No
Keywords: ., book, bookcentury1800, bookdecade1890, bookpublishernewyorktaudel
