A mechanical digital clock with three digit wheels on different axes (X, Y and Z) from each other.

* Visually crazy but practical
* Driven by a single stepper motor
* Available for small 3D printers. All parts are designed within 180 x 180mm
* Easy time adjustment by manual (physical) operation
* High visibility with large digit characters

You can buy this clock from Officially licensed store at
https://www.etsy.com/listing/1736820078/

3D data and the program to drive it are published for free at
https://www.instructables.com/Triaxia...
https://www.thingiverse.com/thing:628...
https://www.printables.com/model/6292...

How to adjust the time is shown at
   • Time Adjustment of Triaxial Numechron...