1. Apply
the standard dimensioning practices for mechanical drawings. pp. 490-493
2. Differentiate
between current ASME standards and past practices for dimensioning. pp. 494-499
3. Apply English
and metric tolerances to dimensions. pp. 506-520
4. Calculate
standard tolerances for precision fits. pp. 510-511
5. Apply
tolerances using the basic shaft and basic hole systems. pp. 510-519
1. How are concentric circles best dimensioned?
2. Sketch the symbols for diameter, radius,
depth, counterbore, countersink, and square.
3. Where are these symbols placed with respect
to their numerical values?
4. What is the primary difference between
counterbore and spotface?
5. When is a small cross required at the center
of a radius?
6. Define the depth of a blind hole.
7. When are angled extension lines used? Sketch
an example.
8. When should extension lines be broken?
9. How is a reference dimension identified?
10. How can you tell if a dimension is out of scale
(without measuring the drawing)?
11. Write a note showing that a .25-inch-deep,
.875-inch-diameter hole is to be repeated six times.
12. When is an arc dimensioned with a diameter, and
when is one dimensioned with a radius?
13. When should the word “drill” replace the word
“diameter” when dimensioning a hole?
14. What is the proper proportion of width to
length of arrowheads?
15. What is the difference between limit
dimensioning and plus and minus dimensioning?
16. What is the term for the theoretical size of a
feature?
17. Compare the thickness of dimension lines to
object lines.
18. Compare the thickness of dimension lines to extension
lines.
19. If two dimensioning guidelines appear to
conflict, which guideline should be followed?
20. Write a definition of what Rule 1 means for a
drawing of a flat washer with a 0.500 diameter ID, 1.000 diameter OD, and a
thickness of 0.062. Use a tolerance of plus or minus 0.005.
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