Dimensioning
Manish Mittal
Instructor
MET 100
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9.2
A fully
defined part
has three
elements:
graphics,
dimensions,
and notes
.
UNITS OF MEASURE
On a drawing used in American
industry, all dimensions are in inches,
unless otherwise stated.
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There are a number of terms important to the
understanding of dimensioning practices.
•
A
dimension line
is the thin solid
line which shows the extent and
direction of a dimension. Dimension
lines are broken for insertion of
dimension numbers.
Arrows
are placed at the ends of
dimension lines to show the limits of
the dimension. Arrows are uniform in
size and style no matter what the
size of the drawing.
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A
size dimension
might be the overall
width of the part or the
diameter of a drilled
hole.
A
location dimension
might be length from
the edge of the object to
the center of the drilled
hole.
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- Spring '08
- Mittal
- Dimension lines, dimension line, Manish Mittal, Manish Mittal Instructor, dimension numbers
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