I think so, yeah. The space age made precision manufacturing relatively accessible. The U.S. military had a pretty insatiable appetite for these kinds of things

I think so, yeah. The space age made precision manufacturing relatively accessible. The U.S. military had a pretty insatiable appetite for these kinds of things for all sorts of stuff. submarines, torpedos, aircraft, drones, and on and on. https://en.wikipedia.org/wiki/Inertial_navigation_system https://en.wikipedia.org/wiki/Inertial_navigation_system a quick search didn't find any hard numbers. but, yeah, I'd bet a few dollars they they were (are?) very good.