Just another version of a 7-segment mechanical display, 3D printed. This particular model is a sequential counter (0 - 9) that receives a linear input to cycle the display. The linear input is converted to a rotational motion before passing through a dual-spring ratcheting mechanism that serves two purposes:

1. Allow the return of the input plunger to the upper position without reversing the cam stack rotation
2. Transfer the input rotation (on the down stroke) to the two cam stacks (meshed together in a 1:1 ratio).

All mechanical components fit in a low-profile housing. The total required depth of the case is only 14mm. In addition, all components are 3D printed except for screws and rubber bands.

Other configurations include:
- Digits with varying number ranges
- Multiple digits printed as one piece
- Various cam and follower designs
- Optional stepper motor input (28BYJ, NEMA 17, etc.).

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