General Tools 300ME 6-Inch Flex Precision Stainless Steel Rule mm, 64 grad General Tools industrial precision rules are made with etched fine black graduation for easy reading and long life Ultra fine black graduations on the ruler show graduations of mm, 64ths This line gauge features a polished stainless steel finish with an overall length of 150 mm (6 inches) and width of 12 mm (15/32 inches) Ruler has a blank second side and also features a convenient pocket clip Made in the USA