Digital USB Microscope Stand

A stand for USB Microscope to provide accurate fine focal adjustments
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There many brand names attached this scope, I got mine from Maplin in the UK. I have seen many other versions with the exact same design.. The stand that comes with the microscope is serviceable but is frustrating when trying to focus on really tiny things. So I designed this version.
I thought it would useful if you could point the microscope at a wall so I designed it so you can change the angle of sight.

#EDIT#
A new scope holder has been added it is a corrected stl. thank you to Planet_Earth for pointing out the error.