The Chappell Model #912-S Woodworkers Square has a body 1-1/2" x 12" and a tongue 1" x 9". Both body and tongue front and back have zero point 1/16 inch scale (.625") on the edges and a center rule scale along the center of each leg. This square is precision milled and Made in USA of 100% US sourced stainless steel with deeply etched markings for a lifetime of use.