Master cylinder question? What's it fit?

TylerW. Thank's a lot for your thoughts and comments, there my boy.
I thought of doing the back of the master cylinder measurement, but then without taking it apart, still wouldn't know if it's 15/16 inch, 1 inch, 1 1/16 inch, or something else, so that's why i didn't bother.
Can't tell with just a ruler, as my eyes just ain't that good anymore.
Good enough for you?
And besides your "comment" isn't justifiable in the thread.
I'm guilty of that myself.
I shouldn't have made one either.
Got ticked off at the guy for the wrong reason, telling me to throw it away, and i didn't care for that comment.
My bad.