The ole "2" wrench

[OilyRascal]

I've been working on this wrench for a few weeks now with absolutely no progress in identifying who made it, in what time frame other than a rough guess of mid 1800s, or its specific purpose if it had one; although I would "guess" it is a tractor or implement wrench. 

It measures 7/16" flat to flat on one end, and 1/2" on the other.  Total length is 4-1/8".  The only  marking is a "2"

[john k]

The shape of those jaws do put some age on it, 1920 or before?   I am betting the other ones in the tool roll were the  "1" and the "3"!

[1930]

That is an interesting wrench and am eager to hear the story behind it

[Billman49]

Hi
I do not about the USA, but in the UK this shape of spanner was used to adjust ploughs (plows) or cultivators where the various coulters and mould boards could be set to different furrow widths.... Square headed set screws were used to lock the various parts onto round cross bars or square headed nuts and bolts on the rectangular side frames - in use up to WW2... Generally bigger than 7/16" or 1/2", for ploughs, but these smaller sizes could be found on hand pushed machine for the home gardener or professional horticulturist.