Somebody went to a lot of trouble to make this. Truly one of a kind.

http://www.ebay.com/itm/vtg-9-adjustable-wrench-no-name-steel-cutout-old-iron-crude-rare-unusual-tool-/291125380745?pt=LH_DefaultDomain_0&hash=item43c86cc689

Lordy what a project that would have been. Cutting the two square holes through the handle (one for the jaw, one for the nut) would have been a major pain without the right equipment.