Front sight height

[CH4]

Does anyone know the front sight height for an 8 3/8” 29-629?
I want to pick up an FO front sight for my 29-5 but I am currently separated from my gun.

Thanks

 

[S&W revolverman]

The front sight dimension is .278, according to the S&W parts book.

 

[CH4]

The front sight dimension is .278, according to the S&W parts book.

Thank you!