scarce Straight Head Aluminum Bodied Tire Pressure Gauge GM CO. MFG. INC. For Sale

This 5 1/2 inch long tire gauge is an early hard to find straight head version. MarkedGM CO. MFG. INC. I\'m not sure if they are tied to the GM car company or just tried to associate their name. bar moves but I couldn\'t vouch for accuracy.
For information on old tools the resources at Mid West Tool Collectors Association are top notch. They have links collected there for everything antique tool related.Make sure to check out my other items, I will combine shipping just wait for the invoice. I am in a selling mood, it\'s not Christmas yet but schit has to go, offers is set to let me see offers that I don\'t think I\'ll take, might change my mind..........