You are correct sir! A rider National, with a counter weight, somewhat blurring the line, after 4 boom trucks before this one, it's more crane like, at least to me. To me, a boom truck is mounted behind the cab, doesn't have a 360 degree load chart, continuous rotation, a CW, and the operator stands up while craning (?) his neck to keep the load in sight. BUT, whenever I am confronted with someone like you who is a REAL crane guy, I immediately agree, it's a boom truck. A nice big tricked out boom truck though. I have never heard a cogent explanation on the difference in terminology, and what about the newer "boom trucks" that are 60 to 80 ton? It gets tricky when I get a call for a job, and I have had a few instances when I pull up and have heard "oh, thought you had a crane", but since I first asked what the load was and how far it had to go, to be sure it was in my chart, I still have happy customers. Heck there's a guy in my town with a stand up 14 ton boom truck, who refers to his business as a "crane service", so no way (until around big crane guys) am I going to call my superior rig a boom truck!
But like the small aircraft I fly, when a guy with a much bigger airplane scoffs, I'll point out it gets me high enough to kill me, like my boom truck lifts enough weight, high enough, to be potentially deadly, so still a serious business. 99% of the gen public look at my operation, and think "crane", so I let it slide, for sure I freely admit it sounds more impressive then boom truck. How about "almost a crane?"