This machine keeps track of employee time.
You push in a special paper and it stamps the current time. The employee would clock in when they get to work, clock out for lunch, then clock back into work and clock out end of day.
Tag: Clocks / Watches
History of the Flip Clock
The flap display was invented in 1948 by a self taught engineer named Remigio Solari. His flap display can do numbers and letters.
It was renamed The Solari Board, and first installed in 1956 in Belgium at Liege-Guillemins station. It was such a success to display time and information, that it became industry standard used in places like railroads and airports worldwide.