(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 180q 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 180q and check the displacement.
6䋮 Repeat steps 1, 2, 4, 5 until the displacement is within 3μm.
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
