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9 – It can be allowed part of object, placed between an observer and cutting plane, to show
directly on sectional views by an incrassate dash-dotted line is the so-called “imposed projection”
for simplification of picture and diminishing of amount of images (fig.2.28, e);
10 –It is assumed to give an opening contour only for the image of openings in gear-wheels,
pulleys, and also for wedge key channels in place of complete depiction of a part (fig.2.29).

Figure 2.29 – Conventions and simplification

QUESTIONS FOR SELFCHECK

1. What State Standard sets the rules of object depictions?
2. What kind of vies do you know?
3. When are views and sectional views used?
4. What is denotation of sectional views?
5. What difference between sectional views and sections?

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