Metronor’s handheld probing units are called Lightpens and its use
is very intuitive. The carbon-fiber skeleton provides rigidity for accurate measurements. All models are powered by a rechargeable battery that lasts for several hours and can be operated with as many different probe tips as the user wants.
If you’ve never used one, this is how a Metronor Lightpen works and its extra functionalities.SHOW ME THE VIDEO