on amazon...they have these...it zooms 800x and you can view it thru your computer...plug into your computer and view..that simple 33 bucksYou do not need a very powerful microscope for fecals - the vast majority of parasites, and all the ones of interest in chickens, can be seen with a 40x (40 times magnification) lens. The feces has to be processed in a zinc or sugar solution first, then examined.
You can use these instead of a centrifuge, although if you have access to a centrifuge that will improve your results
http://www.revivalanimal.com/Fecal-Flotation-System.html
If you can get just one of the units, they can be cleaned and reused.
And then you need a flotation solution, such as Fecasol
http://www.pet-informed-veterinary-advice-online.com/fecal-flotation.html
1 gram of feces (about the amount of one section of a Tootsie Roll) is mashed together with the flotation solution. A filter is then pushed down into the container, it is filled to the top with solution, a slide cover slip set on top, then it is left for 10 minutes. The cover slip is then carefully and gently lifted off by the edges, and placed on a slide for viewing under the microscope.
http://www.amazon.com/dp/B005GJBDRO...UTF8&colid=TM055W53ANIV&coliid=I1Q1NHZCB3DKMD
the one I have you can actually take pictures with it...its really cool