Cheap wrenches for making homemade tools - video

[NortonDommi]

"Actually one needs 2" - I say what sort of talk is this! On the right path but the fact is one can never actually have enough.
Take jam nuts for example, you do the thin nut up to the specified torque then you torque up the standard nut on top. . It pays to hold the jam nut and many spanners are too thick to allow tightening the top nut if they are used so now you need a thin section spanner. You might still want to hold the head of the bolt as well so that is three.
Even thinner ones for in really tight places, bicycles are an example, plus off-set ones for around corners, early Chev distributors! Long spanners for under things, short stubby ones for where the long ones can't go etc, etc, etc.
I would say two toolboxes for the spanner collection would be better!