Lesson 2: Orthographic Drawing
|The drawing below shows a clock mechanism that
may be placed inside a clock body made in the school workshop. We
call the mechanism which is manufactured in large numbers a Standard
Component.( The drawing is not drawn to British Standards
308). The Drawing has no centre lines or construction lines. The
images are also in the incorrect positions.
When making a product it is not always necessary to make all
the components or parts. Standard components can be easily purchased.
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