Now I know that I am old ...
I used to strip one of those in Army ROTC in high school ... no decilnation or Range of Fire on the plain tripod on ours, but it does bring back memories ...
In fact, I am guessing that I am the only one on this website (or one of a very few at most) that did his PT as 2 1/2 hrs a week of close order drill with a US M1A1 rifle ...
TTFN,