In a message dated 21/10/05, davewilley@............. writes:

> Larry,
> Since you got me thinking about using a micrometer for seismo leveling 
> adjustments, why not just buy the head instead of hacking up a full micrometer?
> 
> I've used these heads for graduated adjustment on test jig leveling in the 
> lab for optics and other lightweight uses. My only worry is the weight of the 
> seismo itself that the mic head will have to support. Somebody ELSE paid the 
> bill. 
> Dave Willey - KD6KWM

Hi Dave,

       I just checked EBAY for 'Micrometer Head'. There are 19 listed at the 
moment, some starting from $5. I bought two 1" ones a while back and paid 
about $8 each. 

       If you get a bit of tube the same ID as the OD of the rod and a 
matching SS bearing, you can make a good 'ball point' which doesn't wander. You can 
usually tighten the thread on a micrometer.

       Regards,

       Chris Chapman
In a message=20=
dated 21/10/05, davewilley@............. writes:



Larry,

Since you got me thinking about using a micrometer for seismo leveling a=
djustments, why not just buy the head instead of hacking up a full micromete=
r?



I've used these heads for graduated adjustment on test jig leveling in t=
he lab for optics and other lightweight uses. My only worry is the weight of=
 the seismo itself that the mic head will have to support. Somebody ELSE pai=
d the bill.=20

Dave Willey - KD6KWM




Hi Dave,



       I just checked EBAY for 'Micrometer=
 Head'. There are 19 listed at the moment, some starting from $5. I bought t=
wo 1" ones a while back and paid about $8 each.=20



       If you get a bit of tube the same I=
D as the OD of the rod and a matching SS bearing, you can make a good 'ball=20=
point' which doesn't wander. You can usually tighten the thread on a microme=
ter.



       Regards,



       Chris Chapman