Posted by sorry, not a good 'splainer I guess on June 28, 1999 at 22:43:52:
In Reply to: Re: Re: How is "bore" measured? posted by jason on June 28, 1999 at 22:16:16:
the space between (<-here and here->) <- a cross-section view of a slide
...measuring the distance of the empty space inside of the removable slides on your tuba