The latest incarnation of that is an IR camera in a similar style - but they make an ESR meter look like loose change.

if i had the money to buy one of them i wouldn't be needing to repair a 5 year old tv lol

 

if i had the money to buy one of them i wouldn't be needing to repair a 5 year old tv lol

The cheaper pyrometer thermometers are a bit wide angle.

There's an optimum distance for best accuracy, and that more or less dictates how many components it can "see" at any one time.

One test report on various makes claimed that the sighting laser didn't always point in the exact right direction.