MicrobeHunter.com Microscopy Forum

In snooping around I noticed a reference to "short barreled" objectives. Could that be what this is? Are there adapters for them, if so?

I purchased a new objective for my premiere 160/DIN microscope. It was not parfocal, as I would expect, but it was so not parfocal that I cannot raise the stage high enough to get it to focus, even with the stage stop screw completely removed. If I put four slides under the commercial slide I was te...