Quote Originally Posted by Sticky View Post
Sharpness tester

Of course, the test media isn't exactly equal to a hair... Not sure about consistency. Reasonably objective, and made for the purpose. Also more than I'd want to spend, considering our practical application goals (for sharpening/tooling/hone comparison).
Classic...

The last line on that tester

"Note As this system is different to the ISO 8442.5 testing technique for sharpness measurement the results from this system are not directly comparable as the cutting performance of any specific blade or knife varies dependant on the material being cut. For example a razor blade is great for shaving , but is useless at cutting down trees! "