Prop Size is WHAT - - - HELP !

[Fireball]

I have a barely used prop from my 1985 50 hp Johnson that I want to sell online locally but this prop has no size numbers anywhere on it and I looked hard, real hard.

Is there a way to measure the prop to get the needed size ?

[Bighare2]

Did you look in the center hub by propshft splines? An OMC prop has the dia & pitch cast into the aluminum.
If no numbers then you can find a prop shop which will have a measuring tool.

[Fireball]

Did you look in the center hub by propshft splines? An OMC prop has the dia & pitch cast into the aluminum.
If no numbers then you can find a prop shop which will have a measuring tool.

Thanks for sharing your time. It’s a replacement prop so definitely not a OMC prop. I believe the only local
shop closed here.