I found this cool little old telephone selector on ebay, no idea of its age or origin. It looks to have 8 primary to 12 contacts per layer (Common to 0-9,-,N) the 9th layer looks disconnected.
It looks to be a quadrant selector with four armatures per layer allowing for rapid selection, allowing for two of the four arms to be selecting the common at all times.
![](https://blog.hegars.com/wp-content/uploads/2021/08/s-l1600-1024x462.jpg)
![](https://blog.hegars.com/wp-content/uploads/2021/08/s-l1600-1-1024x462.jpg)
![](https://blog.hegars.com/wp-content/uploads/2021/08/s-l1600-2-1-1024x462.jpg)
![](https://blog.hegars.com/wp-content/uploads/2021/08/s-l1600-3-2-1024x462.jpg)
![](https://blog.hegars.com/wp-content/uploads/2021/08/s-l1600-4-1024x462.jpg)
Re-creation
So before I’ve even receive this I decided to recreate it just from the images, will most likely drive it by a stepper motor for simplicity because I’m not a clock maker.
![](https://blog.hegars.com/wp-content/uploads/2021/08/lineselector2-1024x564.png)
![](https://blog.hegars.com/wp-content/uploads/2021/08/lineselector-1024x564.png)
![](https://blog.hegars.com/wp-content/uploads/2021/08/lineselector3-1024x564.png)
![](https://blog.hegars.com/wp-content/uploads/2021/08/Screenshot-2021-08-14-235347.png)