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Amazon.com: Iris Aperture, 1.5 to 29 Mm Adjustable M42 to M42 Iris Diaphragm High Strength Manual Control Handy for Microscopes : Electronics
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Amazon.com: Iris Aperture, 1.5 to 29 Mm Adjustable M42 to M42 Iris Diaphragm High Strength Manual Control Handy for Microscopes : Electronics
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Amazon.com: Iris Aperture, 1.5 to 29 Mm Adjustable M42 to M42 Iris Diaphragm High Strength Manual Control Handy for Microscopes : Electronics
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Amazon.com: Iris Aperture, 1.5 to 29 Mm Adjustable M42 to M42 Iris Diaphragm High Strength Manual Control Handy for Microscopes : Electronics
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