Check out PACT. I've had one of the model 1's from the 80's IIRC. Never misssed a beat, still working & when you (or someone else) shewts the sensors, screens or supports replacment is dirt cheap & easy.
Yes, you will shewt it one day, I gaur-on-tee it!
__________________
Allan Quatermain: “Automatic rifles. Who in God's name has automatic rifles”?
Elderly Hunter: “That's dashed unsporting. Probably Belgium.”