ACU-RITE MILLPWR Old Style - Manual (Page 106)

CALCULATOR
MILLPWR
Operation Manual
Page 6-9
Next, we’ll put in the other side line. This line starts at X = 2, Y = 0, and goes out
from its own start point at a 110
°
angle.
Again, since we know the angle, we can use
polar coordinates. But because the angle (and
the length) will be measured from point B, not
from the datum, we need to use incremental
dimensioning, not absolute.
•
Press the LINE key. In the FROM point, put
X = 2 and Y = 0 .
•
In the TO point, press the POLAR softkey. Guess at 5
for R2 .
•
Since this is the length of the line from its start point,
B, and not from the datum, we’ll need to use
incremental dimensioning instead of absolute. Press
the
ABS/INC key to bring up the INC reference field.
Because the FROM point ( X1/Y1 , or R1/A1 in polar) is the “incremental zero”, we
want R1 in the INC field, MILLPWR puts it there automatically. The R2 field now
says “ R2 is 5.000 measured incrementally from the FROM point, R1/A1 ”.
•
Move to the A2 field. Enter 110
° for the angle. Since the angle is measured from
point B, the incremental zero, we must press the INC/ABS key again, and we see
A1 is automatically put in the INC field. The A2 field now reads “ A2 is 110
°
from the
FROM point, R1/A1 ”.
•
Press USE to see the line.
70°
+X
110°
INCREMENTAL
ZERO
2.00 B
A2
R2
FROM
2.000 X1 ABS
0.000 Y1 ABS
“From its own start
point” means we
can’t use absolute
dimensioning. We
need to use
“incremental”.
TO
5.000 R2 ABS
A2 ABS
TO
5.000 R2 INC
A2 ABS
R1
TO
5.000 R2 INC R1
110 o A2 INC A1
SERVO O F F FEED 0 100% INCH SCALE 1.0000 TOOL:
SELECT
FEATURE
FIND
POINT
FIND
LINE FIND
ARC CLEAR
CALC
RETURN
FEATURE
GEOMETRY CALCULATOR
END OF 2
001 GEOLINE
002 GEOLINE