Mechanical Drafting
Mechanical Drafting
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In our eReader you can find the full English version of the book. Read Mechanical Drafting Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book Mechanical Drafting
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The development of a cone, or its frustum, is the same in general method as the pyramid. The cone may be considered as a pyramid of an infinite number of sides FIG. 52. Development of a Pyramid.
the elements of the cone corresponding to the edges of the pyramid.
91. To develop the cone, divide the circumference of the base into a convenient number of equal parts as in Fig. 54. Then, with a radius equal to the slant height (true length of an element), draw an indefinite arc and lay off the circu...mference of the base on this arc. The usual GEOMETEY OF DRAWING 43 method of doing the latter is to step off with the dividers the divisions from the circumference of the circle. While this is not strictly accurate, the error is slight and it is the method generally followed in practice, a slight allowance being made for the deficiency.
92. The frustum of a cone is developed in the same manner as the pyramid and as explained in the preceding paragraph. The elements are revolved to determine their FIG.
What to read after Mechanical Drafting?
You can find similar books in the "Read Also" column, or choose other free books by Charles Burton Howe to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
The development of a cone, or its frustum, is the same in general method as the pyramid. The cone may be considered as a pyramid of an infinite number of sides FIG. 52. Development of a Pyramid.
the elements of the cone corresponding to the edges of the pyramid.
91. To develop the cone, divide the circumference of the base into a convenient number of equal parts as in Fig. 54. Then, with a radius equal to the slant height (true length of an element), draw an indefinite arc and lay off the circu...mference of the base on this arc. The usual GEOMETEY OF DRAWING 43 method of doing the latter is to step off with the dividers the divisions from the circumference of the circle. While this is not strictly accurate, the error is slight and it is the method generally followed in practice, a slight allowance being made for the deficiency.
92. The frustum of a cone is developed in the same manner as the pyramid and as explained in the preceding paragraph. The elements are revolved to determine their FIG.
What to read after Mechanical Drafting?
You can find similar books in the "Read Also" column, or choose other free books by Charles Burton Howe to read onlineMoreLess
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