Discussion:
Size of hex (?) screw in knobs of 5370B time-interval counter
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Dr. David Kirkby
2018-11-16 14:19:41 UTC
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I have a few HP 5370B time-interval counters of various states of cosmetic
and electrical condition. I wish to swap some knobs between the
instruments, as some are in better condition than others. Can anyone tell
me what size of hex key these are? I wish to order a hex key, but
obviously, want one the correct size.

Dave, G8WRB.
--
Dr David Kirkby Ph.D C.Eng MIET
Kirkby Microwave Ltd
Registered office: Stokes Hall Lodge, Burnham Rd, Althorne, CHELMSFORD,
Essex, CM3 6DT, United Kingdom.
Registered in England and Wales as company number 08914892
https://www.kirkbymicrowave.co.uk/
Tel 01621-680100 / +44 1621-680100
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Graham / KE9H
2018-11-16 14:34:17 UTC
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Dave:
If I were you, I would buy a set of inch (as opposed to Metric) hex
wrenches, that at least go down to 0.050 inch as the smallest.
You can get a very nice set for about 10 Pounds.
--- Graham

==

On Fri, Nov 16, 2018 at 8:21 AM Dr. David Kirkby <
Post by Dr. David Kirkby
I have a few HP 5370B time-interval counters of various states of cosmetic
and electrical condition. I wish to swap some knobs between the
instruments, as some are in better condition than others. Can anyone tell
me what size of hex key these are? I wish to order a hex key, but
obviously, want one the correct size.
Dave, G8WRB.
--
Dr David Kirkby Ph.D C.Eng MIET
Kirkby Microwave Ltd
Registered office: Stokes Hall Lodge, Burnham Rd, Althorne, CHELMSFORD,
Essex, CM3 6DT, United Kingdom.
Registered in England and Wales as company number 08914892
https://www.kirkbymicrowave.co.uk/
Tel 01621-680100 / +44 1621-680100
_______________________________________________
To unsubscribe, go to
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George Atkinson via time-nuts
2018-11-16 17:07:32 UTC
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The small HP knobs are 0.050" (50 thou). Get good quality ones or they will damage the screws.
I once found sone marked 1.27mm. The company found a random key that fitted a part they bought in, measured it in metric and ordered 50 custom keys in that size!

Robert G8RPI.
Post by Dr. David Kirkby
I have a few HP 5370B time-interval counters of various states of cosmetic
and electrical condition. I wish to swap some knobs between the
instruments, as some are in better condition than others. Can anyone tell
me what size of hex key these are? I wish to order a hex key, but
obviously, want one the correct size.
Dave, G8WRB.
--
Dr David Kirkby Ph.D C.Eng MIET
Kirkby Microwave Ltd
Registered office: Stokes Hall Lodge, Burnham Rd, Althorne, CHELMSFORD,
Essex, CM3 6DT, United Kingdom.
Registered in England and Wales as company number 08914892
https://www.kirkbymicrowave.co.uk/
Tel 01621-680100 / +44 1621-680100
_______________________________________________
To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com
and follow the instructions there.
_______________________________________________
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