Semi-Auto bed-leveler -- Creality stock printhead mount.

CallJoe shared a neat idea (https://www.thingiverse.com/thing:2524480) about using low-cost digital tire-tread gauges as a "semi-automatic" bed leveler.

Unlike the paper-under-the-nozzle method where you guess whether that's enough friction on the page or not, or the auto methods where you hope the probe senses the bed before crashing (where the sensitivity can change wildly with the bed's temp), in this method, you get the printhead to the test point, then lower the probe and read the number. (more details on a procedure below in the "how-to")

This version also is designed to permanently mount on the head, so there's minimal slop in the measurements, and the structure can print without any supports. There is a gap engraved into the top so the battery case can be slid open, so hopefully this is something you mount and never need to pull off again.

This version of the probe is designed to mount on the holes on the right side of the stock Creality print head, right where the stock autoleveler would mount. This means it doesn't interfere with any other stock functions, since the part it displaces (the auto-leveler) is the part it replaces. If you've opted for a part-fan mount on the right, there are printable mounts for the left side as well, and the vents on the left side are non-functional so it wouldn't interfere..

The mount itself is designed with recessed screw holes so the M2x8mm sockethead screws Creality is fond of for sensors (and may be in your spare parts bag) are the perfect size . . . and match the threaded holes on the right side.

While I've tuned this print to line up with the Ender 4 gantry, I wouldn't be surprised if this also works well with all the Creality printers using this shroud.