Any old timers around who worked with 80 column IBM punch card

DeltaV said
Do you, or a friend, have access to ANSI specs

I saw that too, but I don't know any one with access.

Thanks for checking I hope you find something useful.

I have some punched cards coming from EBay. I have some unpunched cards that I have taken some measurements from.

My guess is that the dimensions will be simple numbers like 0.05 vs 0.048 or the like.

Thanks in advance for any help you can provide