AO Spencer American Optical Microscope Epi Objective Set 10x 20x 40x

Description

AO Spencer set of epi objectives, excellent condition. possibly NOS, in original storage containers.  Includes 10x NA 0.25 (3022), 20x NA 0.50 (3023) and 40x NA 0.66 (3024).  All are 34mm parfocal, infinity corrected with RMS thread.  They are designed for use without covers for bright and dark field work.  Excellent optical and cosmetic condition.  These units appear barely used, absolute minimal contact on shoulder mount area.  The cases are marked with the AO logo and "Made in Austria".
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