The first figure of the number describes the stroke thickness - 25 for ultra light to 95 for extra black. The designation “55 Roman” forms the central point. The basic font weight, “Neue Helvetica Roman”, is at the heart of this numbering system. It’s original numbering system for the weight designations came from Adrian Frutiger’s numbering system for the Univers family. Today, this family consists of 51 different font weights. Stempel AG redesigned the famous Helvetica typeface for the digital age, creating Neue Helvetica for Linotype: a self-contained font family.