Join Date: Apr 2016
Location: Troy Michigan USA
The makers name would be stamped into the toe (front), because it is never stricken with a hammer there. to adjust you strike the button on the top front, or the rear to retract the blade. to deepen the cut, you strike the blade directly. If you find no makers mark...there is a good chance the plane body was made by a craftsman for his own use using an iron he had.