"Pre-war Československá zbrojovka, akc.spol. (or a.s.) and post-war Zbrojovka Brno, n.p. was a maker of small arms, light artillery, and motor vehicles in Brno, Czechoslovakia. It also made other products and tools, such as typewriters and early computers.
In 1946, Zbrojovka started making tractors, which it branded "Zetor" ("Z-tractor"). Zetor continues to make tractors in Brno." - (en.wikipedia.org 11.08.2021)
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