If you don't have a certain speed by some predetermined distance to go, you stop and find out what's wrong.
An old colleague once flew B-47's and B-52's - That was their SOP.
Yes, as I said, same check as V Force (p.s. the guys in black suits were coming for someone else so it's OK.)
This incident reminds me of an occasion when we set the correct thrust but my Vr bug was 10kn less then that of the FO. His was correct. I was PH. Company SOP was if no 'Rotate' call then rotate as bugged. I did a VERY SLOW rotate halfway through which FO (very competent and experienced) calls "Rotate"
Nothing like as serious as setting wrong thrust but we both learnt about cross checking and FO learnt 'don't trust captains no matter how experienced they are'.