Found 2 3D-models for “annulus” across many websites

#annulus#32mm#Sense scanner#optics#oblique#microscopy#chord#puzzle#Phase Contrast#phase
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Ring Area From A Chord

Ring Area From A Chord

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Darkfield / Phase Contrast / Oblique Illumination Microscope Set

Darkfield / Phase Contrast / Oblique Illumination Microscope Set

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