Need the fulcrum?

[Bubby]

Hello Sharpco. I think you would use the fulcrum piece to measure a razor blade but you can't. The razor blade can't reach from the fulcrum to the test media. The knife fulcrum helps to keep the knife blade straight up and down and just gives better control. I've measured all kinds of edges without the fulcrum but when I can, I use the fulcrum because it makes the job easier.