Used to measure surface plane and planned run, and also to check tool setting and right angle. Flexible, strong and precise articulated arms, which can be adjusted to any position. Ball joints enable quick and easy positioning, all three joints are controlled via a locking button. With clamp hole, dovetail slot, which can jam many types of displays.150° V-groove base, can be placed on cylindrical surfaces to easily fix the displays. Easy to move the base without affecting the magnetic force. Ball joints enable quick and easy positioning, all three joints are controlled via a locking button.This text is machine translated.