Charlie,
Please do not get me wrong, again for recreational "broach watching" or a quick team agreement for judging - the scope is great and does not require any removal of equipment.
When I represent a client and my name is going on the line in a written apprisal of a vehicle, say for a for pre purchase inspection - I am not too worried about being polite... The judge and opposing counsel will not be for sure if I get involved in litigation later and I turn out to be wrong....
So I politely ask for a hands on inspection-using this. Works just fine, and the result can be photographed through the magnifier the for precise comparison. Good sellers have nothing to hide.
Phil