How simple is it possible to make a relible dial?

[dsk]

Not sure of make, but the dial looks German.
I have put on some numbers:
1: The contact shortening the receiver when dialling.
2: The pulse contacts.
3: The gear
4: Centrifugal brake, but it is nothing making friction, the only thing is greater radius for the weights.

And, yes it works!

dsk

[teka-bb]

It's marked SEL which stands for Standard Electric Lorenz so it indeed appears to be German.
I've seen this one and similar ones before and wondered how long they would last...