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Hello--

I am writing to ask if anyone has thoughts or suggestions on purchasing a petrographic microscope for museum education in public space.  This would be for visitors to observe rock thin sections and observe how light travels through rocks.

We are ideally looking for a model one that has:
* crossed-polars (obviously)
* rotating stage
               * up to 40x magnification
               * a mechanism on the stage to hold and move the slide around
               * and is compatible with a video camera hookup so that visitors can view, in real time, what is under the lens on a TV screen/computer monitor.  Nothing fancy that takes stacks multiple images, or does 3D modeling, like some expensive models.

Thanks!
-Adam-


Adam Blankenbicker
Education Specialist - Geology
Smithsonian Institution
National Museum of Natural History
Office of Education & Outreach

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