AL usher69 wrote:A question what's the difference between the S&G 8077AD and the 8077A I know there dial ones green the other black. I've googled it and the green ones are older then the black. Asking on this forum most of the time is better the the old Google it..
A few differences.
The A model is from the early '70s, has the green dial and a raised index line.
I have noticed two variations of the A model. One has a narrow window, and the second has a wider window to extend the changing index view. All subsequent models incorporate the wider window.
The AD model from the 2000s has a black dial, a notched index reference, and the metal case wraps around the solid back plate.