Like the title says, I have no idea what I would use this pedal for, but I thought it might appeal to a few of us.
Bill, tgo
https://reverb.com/item/18708233-coppersound-pedals-telegraph-stutter-killswitch
Well, if you were on stage and circumstances suddenly dictated the need to send a coded message. :)
I would imagine its a way to get that effect Pete Townsend got by quickly switching the gibson pickup switch on and off.
I think this is the effect that you would get using that stutter switch instead of the pickup guitar's selector switch.
https://www.youtube.com/watch?v=S2ELAlXdFKo
My grandfather had one of those 'pedals' with his ham radio. He also had a very intriguing tone/frequency generator thing. Just a small metal box with a speaker and a couple knobs that would sweep through a broad frequency range... no idea what he used it for.