Do you US guys call FBI about some clamp meter ? Really? Just asking.
Of course not, it would be ridiculous to call the FBI, why would you even think somebody would do that? Maybe you should go back and read my comment again if you think that's what I was suggesting doing.
But the local police, sure, maybe they don't everywhere but they certainly care here, when you file a theft report for a valuable item they will ask if you have the serial number, and then if it turns up in a pawnshop, ebay, etc they will make use of it. If I purchased something that had the serial number deliberately removed I would absolutely give them a call, otherwise I could be charged with a crime for accepting stolen property. I can't think of any legitimate reason to deliberately remove a serial number.