The last photo of PZO MB-30 field diaphragm and light collector lens - Mikroskopteil

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PZO MB-30 field diaphragm and light collector lens

(PZO MB-30 field diaphragm and light collector lens)

PZO MB-30 field diaphragm and light collector lens - different 6 view
Photo 6 – PZO MB-30 field diaphragm and light collector lens