[hollowstate]

First, thanks for your consideration! I really thought this might be a kind of dead-end. I don't have a picture of it handy, but it's the shaft-in-shaft type (not much to see) - built into the cap itself, with a twist. The main shaft is 3/8" and the vernier is 1/4" instead of 1/4" and 1/8" as many are. You mention there are ways to disassemble it, but I'm running low on dynamite - are there other ways?