Puck for the horn, want dimensions Options

[worn]

Hi all y'all,
I am getting tired of having my horn go off at inopportune moments because I have nudged the butterfly on the steering wheel by mistake. Ahh, a smooth sharp left turn with great savor faire an... blaaaaahhhhhhhhhhhhh, dammit.

So I want to be a cool kid and have a puck button. But not at that price! (insert eye watering emoji) And of course I make everything myself anyway. So could someone give me the OD and ID and height in and out? I can work it out from there. Might go with aluminum but also might go with ebony or rosewood from scraps that I have. Thanks so much. If necessary, I can bring calipers to RRC, but online would be better. That way I won't lose the scrap of paper I have them written on.

I know that there is a 3D printer file but I don't think that I could unravel it to get the measurements.

Thanks so much.
Warren

[mepstein]

4” ID at the base. The top tapers in a bit so about 3 1/2 where the chrome ring sits.