[Taxacom] Instructions for a polarizing unit for an AO Spencer Stereo Microscope

Robin Leech releech at telusplanet.net
Fri Feb 22 21:44:11 CST 2008

Hi Taxacomers,

I recently purchased an AO Spencer Stereo Microscope,
Model 25L, made about 1955 or so.

A polarizing unit came with it, but no instructions.
Does anyone know where I might find the instructions 
for the polarizing unit?  

I intend to study polarizing receptors in the Posterior 
Median Eyes (PME) of spiders, and may be using 
both transmitted and reflected light.

Any help much appreciated.


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