For years, Schaedler has been known for the finest "Mylar" rulers available. All Schaedler rulers are made of .007" thick and 2 1./2" wide stabilized polyester which is tear-resistant and resistant to expansion due to humidity or temperature changes.
Schaedler Double Set - Contains one 46-IM Inch/Metric. Standard inches in 64ths along the top edge; metric millimeters/centimeters on the bottom edge; printers points/picas down the center.
and the 46-DIP Decimal-Inch/Pica Single ruler. New decimal inches in 100ths along the top edge; DTP (desktop publishing) points/picas on the bottom edge; newspaper agate lines down the center.