Throat Erosion gauge recommendations

[1mark]

I am looking to buy a throat erosion gauge. I am looking at Brownells but it is a three piece gauge which could lead to incorrect readings, or is it reliable. I would like to get one that is built to or as close to military specification as possible.
Any recommendations?

[P. Greaney]

The Ara Mor throat erosion gauge is, in my opinion, a superior product and measures exactly as the GI gauges. It can be used for the 1903, 1917, M14 type, and M1 rifles in both 30-06 and 7.62 nato calibers.

[M1Garandy]

I like my Ara-mor TE gauge and my Ted Brown MW gauge.