Features ul style"margin-top0px; padding-top 5px; padding-bottom 5px;" high quality with smooth travel accuracy meets federal specifications hardened chrome plate blades with scratching protection and smooth slide movement precision lapping on all measuring surfaces graduations 4r(8th 16th 32nd 64th) square center protractor with sand enamel finish protective case included for all 2pc/ 3pc/ 4pc combination square sets