SOLD>>>I never got to finish my Unitron project, so I'm selling a very rare green numbered 102mm UNITRON objective in cell with threaded aluminium adaptors ( ready to machine down to tube size).
I found 4,1/4" steel exhaust tube to be ideal.
here is an artical on these rare lenses....
https://www.unitronhistory.com/user-...ctives-lenses/
Asking $600AU free postage.
cheers Dave 0475 079 115