Explore Scientific 2x focal extender query

[azrabella]

Hi - I'm sure someone out there might have the answer to this one. I have one of the above but without the knurled locking thumbscrew. Any idea what size thread it might be as I need to order one. I think it might be an M4 diameter but I don't have anything to compare it to.

Anyone......?

[teoria_del_big_bang]

I don't have one but I think Explore Scientific are from US so could well be imperial, if near to M4 could be 8-32 UNC or 8-36 UNF so would need to count the threads in 1 inch.

Do you have an M4 screw to try carefully in the thread to check if it is metric, do not force and if it doesn't go easily then is imperial of some form.

Hopefully somebody who has one may know the exact thread 🙂 

Steve

[Knighty2112]

Mine has two locking thumbscrews, and both approx 4mm thread. Not sure if it is metric or imperial size screw though.

[wulfrun]

Mine's marked "China" and has a compression-ring with a single M4 thumbscrew (I've just checked it with a gauge). HTH.

Edited May 20, 2022 by wulfrun
typo

[azrabella]

Thanks wulfrun - same as mine. That'll do nicely - cheers.