https://www.myfonts.com/fonts/k-type/argot/

Argot is inspired by condensed grotesque letterforms and would be a monolinear sans except for an unorthodox disparity between inner and outer shapes. Elegantly curved outlines contrast starkly with austere rectangular counters, suggesting a no-frills functionality, 20th century modernism, or an unsettling discordance. The squared off inner spaces also add clarity and crispness.