A wireless measuring head wided the range of measurement
![](http://www.nteg.co.jp/media/001/202204/mode3_w820-recommend_image02_220311_135431.jpg)
It makes possible to correspond the model by expanding the measurement range of a measuring head.
It prevents scratches and wear by adding the retract function to the measuring feeler.
There is no need to replace batteries by adopting the outside contact charging.