Mitutoyo TM-500 Series, User Manual

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(2) Centering the reticle
1
䋮
Place a small workpiece on the stage glass. Turn the Micrometer Heads to align an edge of the
workpiece with the center of the cross-hair.
2
䋮
Rotate the angle scale disc 180
q
and read the displacement between the edge of the workpiece
and the center of the cross-hair.
3
䋮
Remove the four screws from the angle dial cover and dismount it. Slightly loosen the four fixing
screws.
4
䋮
Adjust the eyepiece mount position with the four adjustment screws to minimize the
displacement between the edge of the workpiece and the center of the cross-hair. Centering is
easily performed by moving the eyepiece mount by half the displacement in both the X and Y
directions.
Two pairs of adjustment screws are located at the opposite sides (for adjusting the X and Y
displacements). Adjust the screws in pairs. Loosen one on one side, and then tighten its counterpart
on the other side to adjust the displacement.
5
䋮
Turn the Micrometer Heads to align an edge of the workpiece with the center of the cross-hair.
Rotate the angle dial 180
q
and check the displacement.
6
䋮
Repeat steps 1, 2, 4, 5 until the displacement is within 3 μ m.
7
䋮
Confirm that the four adjustment screws are fully tightened.
8
䋮
Tighten the four fixing screws and replace the angle dial cover.
1
㧚
2
㧚
4
㧚
Small workpiece
2. Installation and setup
15