I am not sure what your theme is, but if you found a way to get your visitors to join a newsletter, you can make some good sales getting your subscribers to see affiliate offers you may show them.
You can also sell ad space to make more money from your traffic instead of using google ads on your site.

You could use affiliate links to promote different microscopes.

Or you can create the coolest, latest, most life-changing ebook ever about microscopes...

I'd do some kw research related to microscope parts and dig deep. Try to determine what people want. Is it just free info or are there some buyers keywords. Maybe look at Amazon and other sites, don't know which, and see what kind of business is happening with microscope parts.

Maybe do kw research to see if there are a lot of DIY'ers out there. People doing light maintenance on their microscopes.

Create a short report based on your findings and give people what they want. You could write about how to care for your microscope. What to avoid doing. What to do. How to do it.

Go to Amazon and look up books about microscopes and check out the TOC. Use for inspiration for your freebie ebook.

Start making an email list and mainly talk about using the microscope. Topics of interest. Probably shouldn't slam with a lot of promo emails.

Try and determine what they're interested in. Problems, what they need.

If they are into getting parts and things, maybe research dropshippers for parts. Just ideas off the top of my head.

Do some guest writing/posting and get more traffic.

What's related to microscope users? I don't know but worth trying to figure out.