yes a spanner is an open end wrench-- at xerox we used metric ones-- (and the directions did mention a 10mm spanner...) I would user plain wrench for an open ended wrench-- and a modifier for someother type-- a pipe wrench or a "monkey wrench"-- which is a very large adjustable wrench--(say a 4 inch pipe wrench--)

Here in NY, we use wet noodles to "flog" people. So a user who calls help desk and states "I deleted all these files, by mistake-- can you restore?" get told "Fifty lashes with a wet noodle! Of course- we can-- give a a few minutes, hours, days (as appopriate)." Its a sort of friendly empty threat-- or a mild punishment.

(user who call and complain that files have mysteriously disappeared-- or blame us-- when they are at fault-- do not get such friendly punishment.-but they too, get there files back--)

a Wet Noodle flog is punishment when people feel guilty for doing something wrong (deleting files) but are easy to work with since they are honest, and admit that what happened was their mistake--.