Anybody know what this wrench is for? I have a pretty good idea what it was used on, just not sure about specific application.

Checked ebay for 8322's and this one is similar.
http://www.ebay.com/itm/BORROUGHS-T-E-BT-8322-1-8L-ENGINE-WATER-PUMP-BELT-TENSION-WRENCH-/271129194909?pt=Motors_Automotive_Tools&hash=item3f208f319d&vxp=mtr

Distributor wrench.

Thanks guys. Can't find it in the books that I thought it would be in. I am going to move it along and want to be informed about it before I do so.

Even with your help, information is pretty hard to find about this specific wrench.

Distributor wrenches are usually box end. Try looking for manifold wrench ,
probably late 20's early 30's
Just a guess