My own design scraper blade control gauge design based on the eye-wateringly expensive BIAX tool. 

This is not a Biax tool. This is my own design and made by the author.

Radius checks on 4 sides: 40mm - 60mm - 90mm - 140mm. High quality edges make it easy to check your grind.

1" square window for "points per inch" estimation.

Will not rust. Made from .118" (3mm) 304 stainless steel, this tool should last a lifetime!

Indelibly engraved radius numerals.

Many thanks for your patronage!