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The Railway Educational Bureau Reading Working Drawings Part 1 & 2 LOT OF 2
The Railway Educational Bureau Instruction Paper Unit SS.3 Reading Working Drawings Part 1 & Unit SS.4 Part 2 LOT
Part 1
Soft Cover
50 pages
Copyright 1918
CONTENTS
Section 1
Section 2
Section 3
Section 4
Section 5
Section 6
Section 7
Section 8
Questions for Self-Examination
Section 9
Section 10
Section 11
Questions for Self-Examination
Section 12
Section 13
Section 14
Questions for Self Examination
Section 15
Section 16
Section 17
Questions for Self Examination
Section 18
Examination Questions
SECTION 1.
Drawings are the universal language of the engineer. They are the sign language, so to speak, by which the engineer can place his ideas on paper in permanent form, so that they can be transmitted to the office or the shop, or kept on file for future reference.
A working drawing shows the details of work to be performed; it gives the mechanic the design, dimensions and drawing of his work on a picture plane. (A picture plane is a flat surface on which all lines of a picture are drawn.)
Instruction Paper Unit SS.4 Reading Working Drawings PART 2
Soft Cover
84 pages
Copyright 1914
CONTENTS
Section 18
Section 19
Section 20
Section 21
Section 22
Section 23
Questions for Self Examination
Section 24
Supplemental Methods
Section 25
Section 26
Examination Questions
Supplement to Section 23
Examples of Shop Blueprints Notes
Example 20-35
SECTION 18.
In Section 14 of the preceding lesson a description was given of dimension and extension lines, which are frequently used in showing dimensions on a drawing.
While the dash and dot line is the standard line that draftsmen are supposed to use in putting dimensions on a drawing, nevertheless many draftsmen use a light, solid line for this purpose. Generally speaking there will be no difficulty in recognizing which are dimension lines on a drawing, even though the light, solid line is used instead of the dash and dot line.
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