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U.S.-Q.M.C.
- Thread starter wrench136
- Start date
Private Lugnutz
Well-known member
That's a cool find! And I agree with your assessment on the marking. I would say almost undoubtedly. I can't think of any other logical explanation. When those two abbreviations are together, that's always what it means in my experience. I really like the way the periods and the hyphens are all center aligned. Very neat.
But it's not a "jeep" (Willys MB or Ford GPW) gapper. Points were set at .020. I'll check my TM for other gaps (pinion, etc), but those figures are not recognizable off the top of my head. The jeep toolkit did not have a feeler gauge or gapper, at any rate. The tools were only preventive maintenance. The GMTK at 2nd echelon depots, where multiple vehicles were worked on (jeeps, Dodge weapons carriers, 2.5T Jimmies, etc), had a feeler gauge and a wire type gapper with point bending tool. The feeler gauge went from .0015 to .015 in nine (9) blades. The gapper/bender went from .020 to .040 in six wires.
But it's not a "jeep" (Willys MB or Ford GPW) gapper. Points were set at .020. I'll check my TM for other gaps (pinion, etc), but those figures are not recognizable off the top of my head. The jeep toolkit did not have a feeler gauge or gapper, at any rate. The tools were only preventive maintenance. The GMTK at 2nd echelon depots, where multiple vehicles were worked on (jeeps, Dodge weapons carriers, 2.5T Jimmies, etc), had a feeler gauge and a wire type gapper with point bending tool. The feeler gauge went from .0015 to .015 in nine (9) blades. The gapper/bender went from .020 to .040 in six wires.
RTM
Well-known member
I would look at that as a Go / No Go gauge. The smaller size should go, the bigger size should not ( typically). That is a really big spark plug gap for any vehicle I've ever worked on, so maybe one of our aeronautic group may know.
It could also be two different measurements on the same machine.
It should measure those two sizes on each of the first two steps
We use them for things besides spark plugs, so don't limit your thought pattern too much
Hmm, turns out a 1987 Cutlass Cruiser uses that gap size, as well as a 2008 Saturn.
Any clues on when the QMC was being called by that name?
It could also be two different measurements on the same machine.
It should measure those two sizes on each of the first two steps
We use them for things besides spark plugs, so don't limit your thought pattern too much
Hmm, turns out a 1987 Cutlass Cruiser uses that gap size, as well as a 2008 Saturn.
Any clues on when the QMC was being called by that name?
Last edited:
Provincial
Well-known member
One possibility is U.S. Army Quartermaster Corps. They acted as the manager of tools to the Army up through part of WWII.