| American School (Chicago, Ill.) - Engineering - 1906 - 586 pages
...the tracing cloth is very satisfactory and that a good drawing can be made on it quite as easily as on paper. The necessity for making erasures should...piece of clear glass. The whole is either mounted on a track or on some sort of a swinging arm, so that it may readily be run in and out of a window.... | |
| Ervin Kenison - Mechanical drawing - 1906 - 54 pages
...possible, but when an erasure must be made a good ink rubber or typewriter eraser may be used. If tho erased line is to have ink placed on it, such as a...piece of clear glass. The whole is either mounted on a track or on some sort of a swinging arm, so that it may readily be run in and out of a window.... | |
| Howard Monroe Raymond - Machine-shop practice - 1906 - 716 pages
...placed on it, such as a line crossing, it is better to use a soft rubber eraser. All moisture should bo kept from the cloth. Blue Printing, The tracing, of...piece of clear glass. The whole is either mounted on a track or on some sort of a swinging arm, so that it may readily be run in and out of a window.... | |
| American School (Lansing, Ill.) - Architectural drawing - 1906 - 426 pages
...eraser. All moisture should be kept from the cloth. Blue Printing, The tracing, of course, cannot be Bent into the shop for the workmen to use, as it would...with padding of soft material, such as felting. To tins is hinged the cover, which consists of a frame similar to a picture frame, in which is set a piece... | |
| Drawing - 1906 - 424 pages
...it. These copies are made by the process of blue printing in which the tracing is used in a maniuT similar to the/ use made of a negative in photography....piece of clear glass. The whole is either mounted on a track or on some sort of a swinging arm, so that it may readily be run in and out of a window.... | |
| American School (Chicago, Ill.) - Engineering - 1906 - 580 pages
...necessary to have some cheap and rapid means of making copies from it. These copies are made by tho process of blue printing in which the tracing is used...padding of soft material, such as felting. To this ia hinged the cover, which consists of a frame similar to a picture frame, in which is set a piece... | |
| Alfred E. Zapf - Drawing - 1907 - 472 pages
...the tracing cloth is very satisfactory and that a good drawing can be made on it quite as easily as on paper. The necessity for making erasures should...piece of cle*ar glass. The whole. is either mounted on a track or on some sort of a swinging arm, so that it may readily be run in and out of a window.... | |
| American School (Lansing, Ill.) - Architecture - 1907 - 360 pages
...the tracing cloth is very satisfactory and that a good drawing can be made on it quite. as easily as on paper. The necessity for making erasures should...piece of clear glass. The whole is either mounted on a track or on some sort of a swinging arm, so that it may readily be run in and out of a window.... | |
| 1907 - 474 pages
...may be used. If the erased line is to have ink placed on it, such as a line crossing, it is beti.er to use a soft rubber eraser. All moisture should be...piece of clear glass. The whole is either mounted on a track or on some sort of a swinging arm, so that it may readily be run in and out of a window.... | |
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