Notes On Practical Mechanical Drawing, Written for the Use of Students in Engineering Courses
Notes On Practical Mechanical Drawing, Written for the Use of Students in Engineering Courses
Victor T Victor Tyson Wilson
The book Notes On Practical Mechanical Drawing, Written for the Use of Students in Engineering Courses was written by author Victor T Victor Tyson Wilson Here you can read free online of Notes On Practical Mechanical Drawing, Written for the Use of Students in Engineering Courses book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is Notes On Practical Mechanical Drawing, Written for the Use of Students in Engineering Courses a good or bad book?
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38. Some practical points about and the care and hand- ling of drawing instruments. Drawings can he cleaned of dirt with the soft pliable UBB OF INSTRUMENTS. 49 erasers, the kneaded rubber, the sponge rubber or stale bread crumbs rubbed over with a cloth or with the hand. The liquid drawing inks will stand very little erasure with the pencil eraser without loss of blackness in the lines. To keep a drawing in good shape as the work progresses, cultivate early the habit of keeping the T sq. and t...riangles clean, using a piece of paper where possible over parts of the drawing not in immediate use, and, finally, keeping the hands off the work when they are not in active service. Be careful to use the tools only for the purposes for which they were intended. Violations of this are to be found in using the T sq. as a hammer to put in tacks, the dividers as compasses to describe arcs, sticking the divider points into the board so the dividers will stand alone, etc., all of which tend to injure the tools.
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