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How do I fix a mechanical stage from ''drifting'' downwards? Won't stay in position.I move the stage up into position under the objectives but as soon as I let go of the knob the stage drifts right back down again

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You need to tighten the coarse adjustment so it generates enough friction to keep the stage in place. How to tighten it will vary from scope to scope, but most just have the screws on the knob (metal circle inside the knob with two holes in it). To adjust this type, you'll need a special key wrench.

Posted on Feb 22, 2010

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