Ed, I'm just slightly embarrassed to admit that sometimes I can't read a tape measure. Probably has something to do with age.
Hmm, did I really build this plane?
In my attempt to get a precise reading, I placed the 1" mark on the tape on the centerline
of the attach hole and read 3.75" at the hinge pin. How do you say dumb in Polish?

As for being on the wall, they're in transit.

Angier
N4ZQ