All i had was the outside at the base. So, i took.85 off that and it hit right at.35. If i HAD been able to measure the inside, u could probably minus off another 2.5, and yes, that would put it RIGHT in the ballpark of a .32. I know u know your stuff! I watched u & cannonball guy get into it over one of these, before! Ha ha. It is a short. .56" long.