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Astro-Tech AT115EDT Ring Question

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#1 Rick Williams

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Posted 28 June 2020 - 02:36 PM

I'm in the boonies for all intents and purposes. Can someone please tell me the size of bolt to mount a plate to the flat top part of the rings on my refractor? I'm guessing it may be metric, but before I order anything I'd like to know for certain. Thanks. Rick



#2 havasman

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Posted 28 June 2020 - 02:44 PM

I checked 1/4-20 but it's smaller so I'm thinking it's probably M6 but I don't have that size bolt to check.



#3 santafe retiree

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Posted 28 June 2020 - 03:19 PM

Checked mine just now -- M6


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#4 Rick Williams

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Posted 28 June 2020 - 06:22 PM

Perfect. Thanks very much. Rick




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