‘ Thirties Czechoslovak Traffic Police

T77aGendarmerieRoadInspectionTeamCalledStopwatch

Gendarmerie road inspection

https://translate.google.com/translate?sl=cs&tl=en&u=https://hradec.rozhlas.cz/pocatky-dopravni-policie-kdy-stopkar-cetnik-se-stopkami-v-ruce-meril-rychlost-8348783

Czech Pol;ice Museum: https://juleswings.wordpress.com/2020/02/09/the-czech-police-museum-muzeum-policie-cr-prague/