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Correct Allen Head size?

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4 replies to this topic

#1 Old Don

Old Don

    Sputnik

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Posted 06 September 2019 - 11:30 PM

Ben,

What is the size of the Allen Head wrench used to adjust tension on the RA knob that  you showed in the Q Zone video?



#2 Edd Weninger

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Posted 07 September 2019 - 04:54 AM

I believe they are Bristol wrench sizes used on Questars.  

 

That reminds me, I don't recall where I put mine away so they wouldn't go missing.



#3 Old Don

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Posted 07 September 2019 - 03:57 PM

Thanks.

See my post  and answer in "Repair Bench".



#4 RobertPettengill

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Posted 08 September 2019 - 08:19 PM

It’s a Bristol Spline wrench. “the Questar Telescopes use 6-flute Bristol Wrenches 0.060 for the knob-set screws and 0.096 for the Control Box and Finder Mirror Bracket.”

This is what you want:
https://www.ebay.com...5wAAOSw-rxcI8DC

#5 Old Don

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Posted 08 September 2019 - 09:45 PM

thanks Robert




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