Measuring BR depth

[Jon Page]

pianotechsupply.com did not show a photo
of this reamer but pianofortesupply.com did:
http://www.pianofortesupply.com/tools1.html

Lower right hand picture.

I remove the shank from the handle and install
it in a hand-crank, hand drill. About five spins
of the crank and the set is done in less than 5 minutes.
-- 

Regards,

Jon Page