Moore and Wright 2-12″ inside mic handle thread

Moore and Wright 2-12″ inside mic handle thread

This topic has 9 replies, 5 voices, and was last updated 15 October 2017 at 20:21 by jimmy b.

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15 October 2017 at 18:11 #321612
jimmy b
Participant
@jimmyb
I’m looking for information…

I’ve managed to loose the handle from my Moore and Wright 2-12″ inside mic,(I say I lost, but it came back from a borrowing!).

Could some tell me what the thread is? Dia and tpi would do.

Thank you
Jim
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15 October 2017 at 18:11 #18699
jimmy b
Participant
@jimmyb
15 October 2017 at 18:21 #321614
mechman48
Participant
@mechman48
Imperial mics are usually 40 tpi. One rotation of the thimble gives a .025" linear movement, hence the barrel marked in .025" incremens.

George.
15 October 2017 at 18:44 #321622
Brian H
Participant
@brianh50089
Jim, I'm assuming that you mean the thread on the rod that is used to hold the mic in a bore whilst measuring it. If so, it is 6BA.

Brian
15 October 2017 at 18:46 #321623
Anonymous
Err, OP said the handle, not the micrometer.

The thread on my M&W internal mic handle measures 0.127" OD, which points to 5BA, nominally 0.126" OD.

Andrew
15 October 2017 at 18:47 #321624
jimmy b
Participant
@jimmyb
Excellent!

I was loathed to start trying taps in the hole.

Thank you

Jim
15 October 2017 at 18:47 #321625
John MC
Participant
@johnmc39344
Just made a handle for my M&W 2-12 internal mic. 5BA.

John
15 October 2017 at 19:49 #321637
Brian H
Participant
@brianh50089
Sorry Jim, I made it 6BA by trying nuts on the thread! I'll give it a proper measure tomorroe and get back to you.

Brian
15 October 2017 at 20:05 #321639
jimmy b
Participant
@jimmyb
I’ve just checked and luckily I’ve got a good 5BA and 6BA. Thanks again

Jim
15 October 2017 at 20:21 #321641
jimmy b
Participant
@jimmyb
I missed the word die out…..
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