Hi Hans,

"Here is a simple fact - in 30 years of tying at international shows, with the most experienced of tiers - I have never ever seen any of my fellow tiers re-align the jaws of their vise when changing hook sizes".

The only vise that I know of that allows for non-adjustment is the Regal. I must be misunderstanding what you mean. Maybe the word 'RE-ALIGN"? I know that I don't have to do anything on my Renzetti to go to the rotating function other then place a 1/2 hitch (or not) and swing the thread over the bobbin rest. So I have no idea what Byron is talking about insofar as an adjustment.
Cheers,

Allan