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Datum
Reference Manual
100S
Example: Setting the Datum on
a Centerline
Here's how you would establish the datum on
the centerline of the part shown:
1. Using the
ABS/INCR
absolute (ABS) mode. Check that the
proper measurement (inch or mm) is
selected.
2. Rest the indicator against any point on the
left or right side of the circle. (In graphic
1 above, we started on the left side.) Press
the
key for the X-axis twice.
ZERO
3. Move the table until the indicator rests
against the other side of the circle. Press
the
(centerline) key. Press the
C/L
and
will calculate the center-
100S
line between the two points. The display
will show the distance from the current
position to the centerline.
4. Now follow the same procedure for the
Y-axis. Only this time rest the indicator
against any point on the top or bottom
half of the circle. Press the
twice for the Y-axis.
5. Move the table until the indicator
rests against the other side of the
circle. Press the
key. Press the
will calculate the centerline
LINE
and display the distance from the
current position to the centerline.
Your datum is now located at the
center of the circle.
OPERATION
key, select the
key,
X
key
ZERO
(centerline)
C/L
key, and
Y
MICRO-
21
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