ACU-RITE MILLPWR Old Style - Manual (Page 17)

INTRODUCTION
MILLPWR
Page 1-8
Operation Manual
Absolute / Incremental
Dimensions you enter from the print can be either absolute or incremental.
Absolute dimensions are measured from the datum which is the workpiece zero.
Incremental dimensions are measured from one point to another.
Holes A and B are dimensioned as absolute, but hole C is
dimensioned incrementally from A.
When entering these dimensions in the MILLPWR , we
would say:
Hole A: X = 2.000 ABS
Hole B: X = 4.000 ABS
Hole C: X = 3.625 INC from hole A
It will often be easier to describe a location in terms of
incremental dimensions than it would be to calculate the
absolute coordinates of a point.
Both absolute and incremental dimensions can be used on the same workpiece. For
example, Hole C has the dimensions
X = 3.625 INC from hole A, Y = 1.5 ABS .
Example: Polar and Incremental
Here is how to enter the angle of a line:
If your drawing provides the angles from one end, you need to use polar and
incremental. The end of the line is measured incrementally from the beginning of the
line.
2
4
3.625
+X
+Y
A B C
1.5
0 1 2 3 4 5 6
6
0
1
2
3
4
5
5.0
P 1 (From)
P 2 (To)
- 53°