Miniature adjustable Billings wrench, designed for a 50xM5 hex-head screw and nut
(I actually used a filed down round head screw)
Sketchup time-lapse: https://youtu.be/3uE9zuy9yxs
Patent US212298A https://patents.google.com/patent/US212298A/en
Category: Hand ToolsThe author marked this model as their own original creation. Imported from Thingiverse.