The last photo of Lens no. 718805 unknown purpose / M27 thread (From the condenser? From the objective? Tube lens?) - Mikroskopteil

Part Index: 00544

Lens no. 718805 - unknown purpose / M27 thread (From the condenser? From the objective? Tube lens?)

(Unknown microscope (?) lens No. 718805 / M27 thread (condenser, objective, tubus lens))

Lens no. 718805 - unknown purpose / M27 thread (From the condenser? From the objective? Tube lens?) - different 9 view
Photo 9 – Lens no. 718805 - unknown purpose / M27 thread (From the condenser? From the objective? Tube lens?)