Probably was (still is) use to connect house doorbell push buttons, 
batteries to the solenoid door bell. :)

Philip Pemberton wrote:
> solarwind wrote:
>   
>> What kind of wire should I use for prototyping on Veroboards? For
>> breadboards, I use thin, single strand copper wire because it's stiff
>> and it sticks into the hole easily. However, veroboard does not
>> require that stiffness and the stiffness may actually be detrimental?
>>     
>
> Use the same stuff you use for breadboards. For me that's 24 or 26 SWG 
> single-core insulated tinned copper wire. Over here, it's sometimes known as 
> "bell wire" (though I have no idea why...)
>
> If you're feeling cheap, get a piece of Cat5 cable, strip the outer jacket and 
> use the 8 inner cores. It's not ideal, but it'll work.
>
>   
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