Hi Garry -
Thanks to Joe, I learned something new, but I've forgotten what it was

...but I did remember a story about an erk (or similar) who appeared at the Stores counter and asked the Quartermaster Sgt for "a big shifter"
QMS - You 'orrible little man! if you come here for a tool, you specify exactly what you need, you do not request a 'big shifter', you request a 15-inch adjustable spanner or whatever size the job calls for!! Do you understand me!!!?
Erk: Well, yes, Sergeant, but it doesn't really matter - I only want it for a 'ammer.
ATB
MikeW