What industry uses the Janka hardness ratings scale?
Correct answer: Flooring

ImmovableControl3
tystyx, thought it was for 🍬 candy 😆 LOL

MadMarcus1812
I'd like to know why they use a .444 inch steel ball as the measurement and not something bigger.

Marshall
Worked with timber for about 15 years now and i never heard of this

Laura
MadMarcus1812, A .444 inch ball is used because the area of the indentation is one square centimeter. What would be the point of using a larger ball?

Tina
ImmovableControl3, me 2

Player Renee
ImmovableControl3, me also!

Player #24358685
MadMarcus1812, like .447 or even .449

Player #25874027
MadMarcus1812, could be about the size of a stiletto?

Danbalz
I got wood