Assertion: treadwheel crane | /r/MadeOf | a single-beam jib
Facets:
Source sentences:
text: The simplest Roman crane, the trispastos, consisted of a single-beam jib, a winch, a rope, and a block containing three pulleys.
text: The simplest Roman crane, the trispastos, consisted of a single-beam jib, a winch, a rope, and a block containing three pulleys.