HEIDENHAIN IK 5000 Addendum - Manual (Page 70)

70 1 Operation
1
.1 Oper
ation
Symmetry tolerance
A symmetry tolerance can be applied to Line and Plane features that
are symmetrical to a reference feature.
Symmetry tolerance applied to a line
To apply the symmetry tolerance to a line:
 Measure four lines, two lines on opposite sides that are considered
to be master edges and two lines from edges that are to be
symmetrically toleranced. Lines 1 and 2 are measured from master
edges while lines 3 and 4 are measured from the edges to be
symmetrically toleranced.
 Construct a reference line from lines 1 and 2
 Construct the line to be tolerance for symmetry from lines 3 and 4
 Select the resultant line from the construction using lines 3 and 4
/LQH 
/LQH 
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/LQH 
/LQH