A. Kruss, Hamburg, No. 260

Drum Microscope with stage fine focus adjustment, c. 1860

A. Kruss, Hamburg, No. 260. Drum Microscope with stage fine focus adjustment, c. 1860 A. Kruss, Hamburg, No. 260. Drum Microscope with stage fine focus adjustment, c. 1860 A. Kruss, Hamburg, No. 260. Drum Microscope with stage fine focus adjustment, c. 1860
A. Kruss, Hamburg, No. 260. Drum microscope

An early ad showing this drum microscope

A. Kruss, Hamburg microscope

A History of the Kruss firm

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