It is easy to use and continues to use. Because it is lightweight and long dimensioning from the metal part is a magnet, it can be done alone. However, if you leave it as it is wet, it turns reddish brown with rust, it will not return at all when pulling it up to its maximum, or the spring will weaken even if it returns, and it will not be stored all at once. This is not stainless steel, so it can not be helped.
I bought mug claws for the first time, but I think that the magnets are cooperating with each other than we thought, hanging from the steel pipe and measuring it, I think that it is very convenient for dimension measurement from the steel frame.