Newport 561D XYZ (or LH) with 13mm micrometers
For most applications that do not use the front plate to mount, this condition does not interfere with top mounted fixtures. Even for mounting to the front plate, those screw holes are still usable.
For most applications that do not use the front plate to mount, this condition does not interfere with top mounted fixtures. Even for mounting to the front plate, those screw holes are still usable.