Assertion: clock's weight | /r/HasProperty | added
Facets:
Source sentences:
text: Some types, such as the Synchronome, had optional extra mechanisms to compare the time of the clock with a standard received from the GPO time service which relayed the time signal from the Greenwich Observatory, which allowed small weights to be added or removed from the pendulum without interruption.
text: Small weights could also be added or removed manually in the absence of this mechanism again without interruption.