In 1922 Jakob Erbar, typeface designer for the Ludwig & Meyer Foundry in Frankfurt, Germany, released the first geometric sans serif font, called Erbar. The instantly popular typeface was reissued in later years by Linotype.
Development of geometric typefaces are considered a result of the Bauhaus modernization movement of post-World War I Germany. The idea was to look at a whole project as an art form with complementary elements including architecture, interior design, fine arts, graphics and typography. Bauhaus style was devoted to extreme simplification, usefulness, and the ability to sustain artistic qualities in mass-produced products.
Other, more well-known typefaces, such as Futura and Century Gothic, followed the success of Erbar. Clearly the most used geometric typeface is Futura, designed by Paul Renner in 1927 for the Bauer Type Foundry, also in Frankfurt, Germany. The Futura font family is currently licensed by International Typeface Corporation (ITC).
The stroke thickness of geometric fonts is very uniform and the characters have sharp angles and bold circles. The lowercase "a" is circular, instead of the more Roman 2-story style of other sans serif classes. The combination of thin and fat shapes, fitting tightly together, commands attention. Geometric fonts are less readable as body text than other sans serif classes.