Help- Balance Pipe Opening Measurements

[Media Man]

Anyone have measurements off of a vintage balance pipe opening. Attempting to create a design for a plug to be used on a drilled out Roman BP I plan to buy. Thank you .

 

[Sym-Cha]

Hope this helps

Chaïm

 

[Media Man]

View attachment 1786194

Hope this helps

Chaïm

Awesome, that's exactly what I needed! Thank you!