Use:  Test the correctness of horizontal position of the installation and vertical position, and test small inclination angle.

Precision grade: Measuring grade is 0.2/300，0.5/200 etc..

  Two V-type measuring surface of the frame level meter is the base for measuring grade, they can’t touch or friction with the rough face of the work piece. When placing, we should carefully, avoiding hurt measuring surface, or will damage frame level and cause the measuring error.

   When using, please make sure work surface and work piece clean, to prevent dust impact the accuracy of the measuring. When measuring, in the same position, should changed in the opposite direction to measure again. When moving, don't allow level working face and work piece surface friction, should be placed filed.