Screws on laser tube


We replace our Reci tube by a GSI tube. Do you know what are those screws for (red arrow):

A quick internet search reveals the following:
Apparently you have a laser tube with an adjustable lens… I can’t tell you why, or what they actually adjust, but you might ask this question to the provider of the Tube.


Sorry, but that’s all I’ve got.
Please let us know what you hear.


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I already asked. I will post the answer if I get any.

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