Proto said:
Sorry, but no self respecting engineer would ever use one of those abominations.
More than once I've heard someone described thus: "He's the sort of man who would use an adjustable spanner." It's not a compliment.
I'll take a wild guess that you've never worked on a ship then.

Agree the correct spanner is always a better option though and wouldn't use one on my bike.
Scenario: remove antenna from top of 50ft mast (thats 50ft above the Wheelhouse) in the present windy weather.
Do lots of paperwork.
Options
1.Clamber up ladder taking every possible spanner size it
might be up the mast.
2. Go up, check bolt size, come down, get correct spanner (from workshop, a further 5 decks down) go back up mast.
3. Stick the Bahco in back pocket.