shinymetal
Well-Known Member
Could be from gas / electricity meters give different speeds they run at. Manufacturer name also points to this.
https://www.google.com.au/search?q=...lLHkAhUAH7cAHbk3A88Q_AUIEygD&biw=1280&bih=877
I hadn't even googled the maker yet, interesting.
They came out of a factory this guy worked in many many years ago. They were used to flick switches on and off at set intervals, these were the spare parts for when they needed replacing, so when the factory shut down the dude just grabbed them.
I just need to think of something to use them for now... How often does one think, "you know what would be really handy, an electric motor that drives at 1rev per 30 hours." I could make the worlds slowest electric car. lol

