Bob,

I have a BB-13 and it has a large plug in the center and smaller plugs 
over by the edge.  Which are you looking for?

Frank Gentges


mongo@......... wrote:
> Hi all,
> 
> I have a Teledyne Geotech BB-13 seismometer which came without the 
> plug.  This is the threaded plug that screws into the top of the 
> seismometer (in place of the locking plug) to seal it during operation. 
> 
> If anyone has one, I'd like to borrow it to have a copy machined.  My 
> BB-13 did not come with it.
> 
> Thanks,
> 
> Bob Hammond
> PSN - Alaska
> 
> 
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