Kinex Stainless Steel Knife Edge DIN 875/00 Squares Size:25 mm x 20 mm These have a squareness that

These have a squareness that is typically close to Accuracy Class 0 to DIN 875 which is equivalent to a squareness of about 0

establishing primary bevels or flattening the backs of plane irons and chisels

triangular teeth as supplied by other rasp makers

either by moving the stock or a tenon jig

Kinex Stainless Steel Knife Edge DIN 875/00 Squares Size:25 mm x 20 mm These have a squareness thatThese stainless steel knife edge squares are made to the highest Class 00 accuracy according to German Standard DIN 875. While this level of accuracy is overkill for general woodworking use, they are handy to have on hand for critical machine set up and also checking the accuracy of other squares that may have gone out of calibration. Because of their very reasonable price, there isn't really a good reason not to use them for general use. Because of