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Blueprint Reading for the Machine Trades, Sixth Edition Unit 2: Dimensioning Systems. Russ Schultz and Larry Smith PowerPoint presentation created by LaVonne Vichlach. Dimensioning Systems. Four different systems of dimensioning used in U.S. and Canada Fractional inch Decimal inch
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Russ Schultz and Larry Smith
PowerPoint presentation created by LaVonne Vichlach
8 ½ X 11
2. If C-size is twice as large as B-size, how much larger is it than A-size?
4X
A2
Engineering DrawingsYES
4. What metric size is twice as large as the A3 size?
NO
Engineering DrawingsMETRIC UNITS ARE MILLIMETERS
FILS & RNDS ARE .12R
PART SYM ABOUT CL
Drawing Notes-GeneralSymmetrical and centerline
Drill and countersink
9. What is the fractional equivalent of the center hole size? (Refer to the equivalency chart, page 25.)
2 3/16
3 5/8
13. Calculate the material remaining between the large hole and the nearest outside edge.
.345
14. Calculate the material remaining between the small hole and the nearest outside edge.
.155
15. Calculate the material remaining between the large hole and the nearest small hole.
.56
Drawing is full size and does not require a “B” size drawing
Enter dimensions for the letters provided.
Sizes are exaggerated. NTS-Not To Scale
Sizes are exaggerated. NTS-Not To Scale
.995
2.995
1.32
.339
.32
.64
.895
1.89
.248
.380
No