This rule is made in the USA by Products Engineering Company (PEC Tools), a premier US tool manufacturer. It is made from the finest stainless steel available and is hardened and tempered. It has a brushed finish and is precision photo etched and then black filled for easy readability. 5R markings with 1/10", 1/100" and quick-reading 1/32" and 1/64" 12" flexible rule is .500" wide and .020" thick. .Both long edges are ground flat and straight. This precision 12" 5R flexible ruler is made in the USA by Products Engineering Company (PEC Tools), a premier tool manufacturer. Rule is made from spring tempered and hardened stainless steel and is .500" wide by .020" thick. It has a brushed finish. The sides of each rule are ground parallel and each end is accurately ground square to allow reading from either end. 5R graduations have 1/10" and 1/100" on one side and quick-reading 1/32" and 1/64" on the other. Graduations are precision photo etched and then black filled for easy readability.