綱具 is read as つなぐ (tsunagu) and means rigging.
つなぐ
tsunagu
つな
grand champion's braided belt
つなわたり
tightrope walking
こうき
law and order
こうりょう
general plan
つなひき
forward puller (of a rickshaw)
こうきしゅくせい
enforcement of official discipline
つなうちしき
ceremony of tsuna-making
つなで
mooring rope
こうもく
main point and details
こうよう
elements
こうじょう
code of morals
つなをはる
to become a yokozuna