Features and Benefits:�Stainless steel blade prevents rust and corrosion�Polycast handle includes acrylic vial for level, plumb and 90/45 degree work�Includes graduations reading in 1/8 in. increments�Reads full 8 in. on inside and outside measurementsThis square has a stainless steel blade that prevents rust and corrosion. It reads in 1/8 in. graduations and reads a full 8 in. on the inside and outside measurements. The Polycast handle includes an acrylic vial for reading level, plumb and 90 degree/45 degree work.