These gauges have been laser cut from stainless steel according to the dimension drawings on page 20 of the 1944 MG42 armorer's
manual HDv 181/7.
The pressure plate gauge checks the curve of the finger which guides the cartridge from the belt into the chamber. Hold it up against
the pressure plate (the knob goes forward). If it doesn't match, correct the pressure plate till it does.
The firing pin gauge has a Min. and Max. recess for checking the firing pin protrusion. Remove the bolt housing from the bolt head.
Slide the bolt rollers to the outside, push the firing pin holder fully forward. Use the gauge to check how far the firing pin point sticks
out.
The little hook should slide under the extractor. If it doesn't, then a cartridge probably won't either and there's a problem. The slot
with the rounded bottom is for checking the contour of the firing pin point. I guess it's for when you need glasses and don't have
them, so you can see if the point is deformed. See what others have to say about these gauges
1/16" thick stainless steel, laser engraved as shown.
$35 for the set - includes U.S. first class postage.
