Tri-retrograde jumping secondYour model is disabled. For more details go to Edit properties3D Model
Your model is disabled. For more details go to Edit properties
Vertices: 18.1kMore model information
Three retrograde hands alternately display the seconds on three sectors of 20 seconds each.
This model is based on what can be seen in this video published by Salwad. Note that in this 3D model, the springs are not displayed.