To provide a ceiling height adjustment implement capable of enlarging a ceiling height adjusting range, facilitating ceiling height adjustment work, shortening a constructing term for a ceiling base material, and reducing works.
The implement is provided with an insertion part 2 in which one bolt and the other bolt are inserted in a mutually screwing state and locking parts 3 engaging with screws of both bolts. In the ceiling height adjustment implement 1, as one and the other bolts screw with each other in the insertion part 2, and the locking parts 3 are engaged with respective screws of these bolts, the connection of the bolts is extremely firm and the ceiling height can be easily adjusted, and further, the adjusting range can be widened because one and the other bolt are used.
KANDA SAKUJI
PANACTY KK
Mizogami Mitsuyoshi
Yoshinori Iwahara