| ▲ | cge 2 hours ago | |
That's just presenting improvements to a mechanism; while it isn't common, particularly for watches, and I don't know much about earlier examples, they do seem to exist. For clocks, however, there is the iconic Swiss railway clock [1], which dates back to 1944 and has a jumping minute. For those, however, the jump is actually meaningful in itself, in they're synchronized by a master clock that has a one minute impulse, and the jump is actually the moment of the impulse. | ||