Nikon DIAPHOT 300 - Page 43

2) Screw holes for mounting various devices
The front surface of the pillar has eight M4 tapped holes for mounting a
manipulator or other devices. The upper four holes are used to mount a device,
which should be removed from above the stage when tilting the pillar. The lower
four holes are used to mount a device, which should remain above the stage
when tilting the pillar.
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