_:ne5e5316cce304f77a25a608c55f48174xb0
<http://schema.org/description>
"The Ultimate in Accuracy           Made of fine quality, fully ground carbon steel Marks a perfect 90 degree angle and is a quick check for 90 degrees Used for marking metal, wood, and plastic Use to set up table saws, disk belt sanders and other power tools Set of 3; 3 inch, 4 inch and 5 inch blades          The design includes a base and blade set at precise 90 degree angle. There may be a small notch at the base to prevent accumulations of debris that could throw off the measurements.     Includes three squares in the following sizes: 3 inch blade with 1-7/8 inch beam; 4 inch blade with 2-1/2 inch beam; and 5 inch blade with 3 inch beam."
<https://micromark.com/ko/collections/measuring-marking/products/steel-machinists-squares-set-of-3>