Pendulum is too short for a grandfather. Given it's only a timepiece with two barrels and springs, I'd say it was essentisl to always work, but tttthere seems to no sign of it being a time recorder in a factory.
This is from a time clock not the one posted above. This has wind indicators and geneva stops. These were so often cases that were cut down, the bottom discarded and turned into time only wall clocks. They are pretty cool piece of history, if you like that. Be careful if you intend to work on it. Springs are designed to power the time piece as well as the timing card stamp ( lower part ) Very strong. The EW can be damaged quickly as well if not taken down properly.