Quote Originally Posted by John Koehrer View Post
120=diameter. 80=radius. 80 what i've no idea, maybe furlongs?
If 120 is the diameter, 80 isn't the radius.

I am wondering whether one of those two numbers might be related to the length of the bulb.

Some of the Lucky enlargers were, IIRC, sold under a number of different names. I wonder if there is a "Vivitar" equivalent that there is more info available.