I have just bought a digital scale that shows either grams or ounces.
My Exo3 93 is 345g strung, which seems about right if you factor a standard 15g for strings onto the 330g unstrung weight. And my old Prince Pro 110 is a hefty 372g. That one will sit in my collection of vintage rackets.
All I would say is, go digital. But it doesnt need to be anything state of the art.
"Tennis is just chess with balls....zugzwang"
Dunlop, Prince....who knows...who cares.