Forty-two squares from 1/16" to 1-1/2". Sizes: from 1/16" to 3/8" in increments of 1/64", from 3/8" to 3/4" in 1/32" increments, from 3/4" to 1-1/8" in 1/16" increments and from 1-1/8" to 1-1/2" in 1/8" increments. Includes built-in ink risers. Size: 5" x 9-1/2" x .030". The Pickett version is gray and the RapiDesign is green.