There are always loose nuts and bolts that need a little fastening and tightening and for that purpose a spanner set is an ideal tool. Mostly used for plumbing and other regular wear and tear ...
It is easier to use a longer spanner when trying to turn a nut, and easiest to push furthest from the hinge when opening a door. A solid beam 0.5 m long is laid across a pivot to form a simple lever.