Nuts on Copal flip clocks

[erbsele]

Especially on the motor, anyone know what the correct wrench size is? An ISO 5,5 socket wrench fits well. But I would assume that this is inch, so 7/32"?

Thank you

[flipoclock]

they're Japanese clocks, I use 5.5 which fits perfectly, but I do not have inch sockets.

[Mackey]

I'm relieved. I thought this was a thread dissing the Copals.

[erbsele]

No, that was a serious question. The pitch of the threads is apparently not metric and therefore the assumption that they are inch threads and nuts

[tonyofthelord]

there is something called the JIS (Japanese Industrial Standard) metric. I kept rounding out screw heads on an old Panasonic until I was told to get a JIS screw driver set. and that worked. not sure they have JIS sockets. check on Ebay.