Assertion: countermarch | /r/CapableOf | create shed
Facets:
value: by raising and lowering warp threads
type: MANNER
Source sentences:
text: The Countermarch and the Counterbalance mechanisms create a shed by both raising and lowering warp threads which means the amount of warp thread deflection required to create the same shed is half that required by the Jack mechanism which only raises warp threads.