an even 72 points to the inch (1 point = 127⁄360 mm = 352.7 µm). In either system, there are 12 points to the pica.
The desk-top publishing point (DTP point) is defined as 1/72 of the anglo-Saxon compromise inch of 1959 (25.4 mm), it is approximately 0.0139 inch or 352.8 µm. Twelve points make up a pica, and six picas make an inch.