No, They do not and they probably won't. Do not use that as your excuse in court... Because you will loose..
No the law even says they do not have to show you the gun what so ever.
No they do not. There is no state where it is a legal requirement.
They have to show that it is has been tested and is functioning properly.
no
Your question has nothing to do with FIREARMS.
All they have to prove is that it was within manufacturer's specifications and calibrated properly, so when stopped by police, they don't need to show you the radar gun, when you ask to see it. An officer does not, and more than likely, will not show you what speed you were going on there radar. That issue would come up in court.
a radar gun
A radar gun police use to check for speeders.
Of course they can all they have to do is hold the radar gun with one hand and the wheel with the other
No, not on the scene. But if you go to court the officer will have to present certification as to their training to operate it, and the fact that was"calibrated."
Depends on the manufacturer's specifications.
five years