John (#8854),
...He mentioned to me how nice the sets of Pratt & Whitney spanners were (I still have one spanner)...
In my garage I treasure the set of Peugeot spanners which came with my dear old 403 (1960). The jaws have convex surfaces (there is probably a technical name for this design, but I don't know it).
The beauty of it is that the load falls on the flat of the nut, not the corners. So it doesn't matter if these have been badly chewed, the grip is still firm (and you can't chew any corners yourself). Works like a charm. Never seen anything like it anywhere since. Except:
Google:
"The Most Used Tool in the Tool Box: Open End Wrenches - Apex Tool ...
www.apexinds.com › Home › Knowledge Base
Specifically I am going to focus on the open end side. ... Peugeot open wrench ... Its revolutionary design of different spaced teeth made slipping off the bolt/n"
Danny.