Are you (like me) always forgetting which way to turn the wheel to level the bed?

I printed the little reminder made by Dirtsky, but i did not want to glue it to my printer.
https://www.thingiverse.com/thing:2004346

I designed a similar indicator with a hole in the middle so you can fix it with an M4 bolt and a T-nut to an extruded aluminium profile seen on printers like the Ender 3 and Ender 5.

Needed parts:
M4x10 with a spring washer or M4x8 (without washer).
M4 T-nut
Black permanent marker (or any color you like)
4mm drill to create a perfect 4mm hole.