I hope they're smart enough to have ordered the focuser with a 5" radius
base.

Howard Lester

There's no need to keep me in suspense, Mr. Lester.

Why, then, should it be with a 5" radius base?

A 5" radius makes a perfect fit onto a 10" diameter tube. Their standard
base is a 10" radius, and that would make for a fit that is very sloppy and
difficult to square to the tube.

Mr. Howard Lester