Vintage Telegraphy Uniselector Wheel 

We believe this is a Vintage Telegraphy Uniselector Wheel, also known as a stepping switch wheel.

I've no idea which application it was used in e.g. telegraphy, telephony, telex, radio communications etc, but it does pre-date the use of microprocessors!

It is made from brass and is approximately 15.2 cm (6") diameter.

The outer rim is alpha numeric comprising 50 letters and numbers:

• A to S inclusive (excluding I,J, O or Q or TUVWXYZ) (15 letters)
  
• 0-9 inclusive (10 numbers)
  

Each appearing twice on the wheel.

A nice little collectible for those whom love vintage technology.