The supporting shaft of the tree house
收藏资源简介：
The tree house support shaft is introduced. To this end， the present invention， in the tree house support shaft of a predetermined length for supporting the tree house at one end thereof is fixed to the tree so as to support the tree house， it is composed of a round bar of the predetermined length of the support shaft， The outer circumferential surface of the end is formed with a plurality of threads are inserted and fixed into the tree along the thread is fixed， characterized in that the center of the predetermined weight is formed to hold the center of gravity of the support shaft at a predetermined position， the inside of the support shaft It is formed integrally at one point， characterized in that the horizontal system is provided to indicate the horizontal state of the support shaft.
