Assertion: pendulum clock | /r/CapableOf | serve as time standards
Facets:
value: for businesses
type: TRANSITIVE-OBJECT
value: for households
type: TRANSITIVE-OBJECT
Source sentences:
text: Until the early 20th century, pendulum clocks were the world's most accurate timekeeping technology, and longcase clocks, due to their superior accuracy, served as time standards for households and businesses.