USB Digitil microscope advice

I actually have a SmarTractor, which is on loan to someone else, and the Wally Protractor.  I think the magnifier got lost, but it looks like one of those magnifiers used for examining fabric, so I can find a replacement.  I was hoping for something really easy to use that is very clear.

Thank you for your help on this matter.

I just captured these images with a $21 microscope that I purchased on Amazon.  I intend to use it for cartridge setup.  I don't see why it wouldn't work, but I'll report back after I'm done.

https://www.amazon.com/dp/B06WD843ZM?psc=1&ref=ppx_yo2ov_dt_b_product_details

@ketchup

Seriously? I got exactly the same scope a few months back and this was the BEST I could get of all angles/lighting. Depth of field on the thing was about as deep as the point on your stylus. I’d BREATHE in the same cubic yard of space with the scope and it would go in and out of focus.

https://www.flickr.com/photos/196901277@N08/shares/oU62249639

 

@normb Yep. Removing the clear protector on the front will enable you to turn the black pointy part, which I assume has a lens in it. This will change the magnification. Try it in various positions.

Aside from that, everything has to be perfectly still. You need a microscope stand that is rigid, and if your table has suspension, you have to defeat it. Minimizing vibrations are very important. Just my HVAC running would cause a blurry image. When you’re ready to snap a photo, press the button in the app, not on the cable, to minimize movement.

Lighting is also extremely important, but it’s difficult to get right with the microscope so close to the stylus. Try other sources of lighting in addition to or instead of the built in LEDs.

It is not easy.

It's the quality of the stand as much as that of the 'scope. It has to be rock steady if you are to get images that aren't blurred. A heavy chemistry lab stand and flask clamp are as good as anything, and better than the flimsy stands that generally come with cheap microscopes. I bought the Dino-Lite stand, but even that isn't what I'd like to see.

At the end of it all, I went back to fine-tuning VTA by ear. What does it matter if I get an exact SRA of 92.5° if it sounds better at some other position?