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8.0
Line Length Accuracy
The following information for the CADJET 2 clarifies the amount of
acceptable variation for plotting accurately. See Figure Chapter 1 .4.
Figure Chapter 1 .4: Line Length Accuracy
1. The drawn line length L
specified. L
plot.
2. Line length L
3. The total difference, or delta, between the longest line within
specification and the shortest line within specification is:
Example:
CADJET 2
is to be within ± 0.2% of the length
w
typically is constant on the top and bottom of the
w
are to each be ± 0.2% of length L specified.
L
L and
R
L ( 1 + 0.2% ) - L ( 1 - 0.2% ) ⇒ + .2 - ( -.2 ) = .4%L
L
R
∆L < 0.4% of L
If:
L specified = 45"
∆L (left and right) must be .4% of 45
Then:
∆L < 0.18 inches
General Information
= ∆L
- L
L
1-15
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