Capt,
Just measured mine and from the top of the barrel to the top of the globe sight it measures .771 inches. This was measured at the front of the sight, the rear has a screw in holder to hold different aperatures.
Not sure if this particular measurement is helpful, if not just PM me, I have a dial caliper and a Target Model and will measure anywhere you want. (I replaced the rear sight with a scope but left the front sight in place)
Roudy