It is used instead of a level for horizontal management of test facilities.
From Japan
On 2017-04-07 22:28:55
Because there is softness, we can smoothly draw around equipment. There is a twist in the middle of the hose which seems to have been made at the time of packing, the habit has been attached with the part collapsed. Depending on the application, it seems to be a problem that is difficult to use.