Thread: William Optics Flat61A back focus
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  #11  
Old 10-12-2019, 11:28 AM
stephen2615 (Stephen)
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stephen2615 is offline 		 
Join Date: Feb 2011
Location: Canberra, Australia
Posts: 70
With all the angst that this has caused me, I bought a set of callipers. A tape measure is just not good enough.

All I can say is damn you black friday/cyber monday specials.
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