Erbar-Grotesk stands as one of the pioneering geometric sans-serif typefaces, originally designed by Jakob Erbar in 1926 and predating even Futura. This foundational grotesk exhibits pure geometric construction with circular O forms, minimal stroke contrast, and clean, rationalist terminals. The typeface features a relatively large x-height with open apertures in letters like 'c' and 'e', while maintaining the disciplined geometric principles that would define an entire category of modern typography. Its restrained character width and balanced proportions distinguish it from later, more extreme geometric interpretations.
