Adjustable wrenches have a screw mechanism located at the bottom of the head to open and close the jaws for a tight grip on heads.
Check if this is available and reserve it online through the Minerva catalog.
CML Library of Things
https://curtislibrarylibraryofthings.myturn.com/library/
https://curtislibrarylibraryofthings.myturn.com/library/