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Gary

How old is the scope?
Can you watch the focus knob turn on its own?
Does it drift after an upward then downward movement or after an upward movement?
I ask because sometimes on older scopes the lubricants on the focus rails gets old and sticky.
Then the weight of the mechanism continues to sag independent of the focus knob position until it comes to rest on the gear play.

Dan


On Oct 5, 2016, at 12:46 PM, Gary Laevsky wrote:

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Hi All,

We lost the manual for our upright stand long ago. 

Does anyone know if there is a way to either lock the focus knob or increase the tension?

We're experiencing z drift using a fixed stage. 

Thanks

Best,

Gary

Dan Focht
Bioptechs, Inc.
3560 Beck Rd.
Butler, PA 16002
www.bioptechs.com
P: (724)282-7145
F: (724)282-0745
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