Here are a few vintage items that I have and am not sure of but was told were WW 1 vintage
I was told the tach was used on the Curtiss Jenny as were the cockpit lights .
Not sure about the switch but might be for the cockpit lights also.
Comments as to their origin would be greatly welcomed
http://s119.beta.photobucket.com/user/f ... sort=3&o=2http://s119.beta.photobucket.com/user/f ... sort=3&o=4http://s119.beta.photobucket.com/user/f ... sort=3&o=1http://s119.beta.photobucket.com/user/f ... sort=3&o=2http://s119.beta.photobucket.com/user/f ... ort=3&o=3Y