Schaedler

This rule shows Standard Inches in increments of 64ths of an inch photographically printed along its top edge. It has numbers every 32nd of an inch, every 16th, every 8th and so on for the entire length of the rule. Metric Millimeters & Centimeters, in half-mm markings, are printed along the 30 cm bottom edge. In scientific circles, mm and cm are referred to as metric measurements or SI units (from the French System Internationale). This classic Shaedler Rule, we have placed Printers Points & Picas down the center. Original picas & points still used in the printing

The Decimal Inch is divided into 100ths instead of 64ths. DIP Points & Picas (DTP=Desktop Publinshing) have been placed on the other edge of this rule. And this time, the points and picas do correspond to standard inches. 12 points = 1 pica; 6 picas = 1 inch. The scale is cumulatively marked in both points and picas for the entire length of the rule (72 picas or 864 points = 12 inches). There is also an Agate Line scale that runs down the center space of this rule. Agate lines were once used to define newspaper advertising space.