https://www.myfonts.com/fonts/emigre/triplex-ot/

Although initially designed as a rational/geometric font, Triplex developed into one of Zuzana Licko’s most intuitive typeface designs at the time. Its first extensive use was in Emigre magazine #14, a special issue devoted to Swiss designers published in 1990. Triplex was intended as a friendly substitute for Helvetica. The name Triplex refers to the three versions that make up the entire family; Triplex, Triplex Serif and Triplex Italic. Each version of the typeface comes in light, bold and extra bold. The italic was designed and drawn by type designer and sign painter John Downer, and was designed to work with both the serif and sans serif versions.