Indestro / Duro-Chrome.
I'm inclined to think Indestro on that model because of the handle design.
From other comments here about that model (and a couple others) I am also inclined to think it was made for one of their private-label accounts or possibly a military/GSA contract.
see the "Duro Ratchet?" thread HERE:
http://www.garagejournal.com/forum/showthread.php?t=36699
see posts # 45, 46, 57, and 61
from what I have been able to suss out, it's a model 677, the drive adapter is a model 3215 (the mushroom-head one with the knurling)
patent number is the give-away: 1902878
the
patent was issued 1933 - that's not necessarily an indication that the unit itself is that old. they used that design (and patent number) clear up into the late 1950s (or early 1960s). my model # 3201 uses the same patent number as well.