Great Neck Saw 10440 24" Aluminum Rafter Square: * High-grade special aluminum alloy * Features rafter tables, brace table, Essex table, octagon scale and hundredth scale * Face graduations in 10ths, 12ths and 16ths * Satin finish with filled impressed numerals * 24" x 2" body length * 16" x 1-1/2" tongue length