There is a handle under the swivel chair in the office. How to adjust the height?

First, how to adjust the height of ordinary pneumatic swivel chair:

The general swivel chair has one or two handles to adjust the height of the seat. If there is only one handle, you can raise the height of the seat simply by lifting the handle upward. If you want to lower it, you need someone to sit in the chair and raise the handle. If the swivel chair has two handles, one is to adjust the height and the other is to adjust the angle. Just try to tell which one is height adjustment, and then adjust it according to the above method.

As shown in the figure:

Second, other types of chair handles: the lifting devices used in lifting chairs are divided into three categories-hydraulic, mechanical and pneumatic. Mechanically use a lead screw and rotate it once to reduce or increase the height of the pitch. This kind of rotating handle can rotate counterclockwise downward or clockwise upward, which is based on the principle of screw.