451 - your 7.92 x 33 Gauges are magnificent. I have two of the full-bulleted pattern in 7.92 x 57, rare but not nearly so rare as the Kurzpatrone
gauges! The basic pattern of my 7.9 x 57 is identical to your Kurzpatr. ones, with groove at case neck and another just above the shoulder. Mine are not from Erma, though. One appears to be from Polte, as it has the marking “P.1939” on it. The other has a marking style I have not seen on the gauges before. It has one line marked “HEER Ww.Su. 1939” on it. I don’t know if the “Ww.Su.” marking is the maker or what it is! Both of my full-bulleted gauges were inspected by WaA42, as were most of these gauges, it would seem.
You also have a nice Erma 7.9 x 57 gauge for the Schusswaffen 98, MG08 and 08/15. I have three similar Erma guages, two marked for the Luftwaffe (WL) with the trademark -style marking like yours, of “Erma” enclosed in a circle, made in 1944, and one early gauge, very scarce I think, marked for the Reichsheer. It is undated, but has the Weimar-style Eagle on it, but is still inspected by “WaA 42J”. I have not seen the German “J” behind the WaA number before, that i can recall.
These “Stahlpatronen” (described as that in a copy of a page from a German ordnance tool price list I have) are very interesting. I have about 25 or so of them representing four distinctly different shapes, two of which, as I mentioned, are “full-bulleted” in profile, probably only representing three types of gauge though.
I tried a scan, but between the shiney surface, and the very lightly etched markings on most of these, the scan was relatively useless.