Assertion: plumb bob | /r/CapableOf | direct weight material
Facets:
value: downwardly
type: MANNER
value: in said space
type: LOCATION
Source sentences:
text: A plumb-bob comprising a telescope suspended in vertical position for free oscillation, with its objective directed downwardly, the telescope having concentric double walls at its lower end forming a symmetrical annular space, and weight material in said space.