Thread: what are these called???
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Old 26-06-2005, 06:02 AM
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iceman (Mike)
Sir Post a Lot!

iceman is offline 		 
Join Date: Sep 2004
Location: Gosford, NSW, Australia
Posts: 36,799
I bought mine from Mitre 10 for $10. It's useful for seeing what angle you're pointing at, especially if you go down the path of manual setting circles.

It just magnets to the OTA.
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