Does Anyone Have Drawings for Throat Erosion Gages?

Greetings all,

Does anyone have drawings for the .30-06 gage that would be used to measure an M1?

Thanks,
Jesse

I notice that these long, tapered two piece gauges regularly appear on that auction site

Brownell's has them. $62.

THROAT EROSION GAUGE - Brownells

Yea, I may have to bite the bullet and buy one. Thanks for the link.

There is just something about having in your toolbox a gage or tool you made yourself. Plus, I naturally distrust gages I havent qualified myself. Even if I buy one I have nothing to check it against.

Regards,
Jesse