Some light hints that may point you in the right direction:

Hint 1

The assembly is a part of a larger machine.

Hint 2

Several assemblies are meant to move side by side in unison.

Hint 3

The square-ish shaped piece is plastic that will wear down and be replaced.

    • Bubs@lemm.eeOPEnglish
      2·
      3 hours ago

      I figured it would be a tough one.

      These are mail insertion machines I worked on for several months as a mechanic. It’s a little blurry since that were moving, but here it is in action:

      • Majorllama@lemmy.worldEnglish
        1·
        2 hours ago

        That’s cool. Never seen anything like that. I love big industrial machines that exist only to recreate an action a single human can do easily lol