I tried to look it up on Mitutoyo's site but nothing looked like it.
Tony,
The Boss ( I guess that's the stud that sticks out to clamp to), is,
Inch
.255 Thick, .468 High, .765 length
Metric
6.58 Thick, 11.90 High, 19.70 Length
I'd appreciate any part number or help finding one.
It doesn't do any good without it.
Only gave $30 for it.