The liquid level is used in the construction business, as a rule, for check of horizontal position of parts or surfaces. However, it is easy to extend the spirit level, entrusting him and check the verticality. It’s enough to carry its body in the form of a right triangle. Then the Central position of the vial and the capsule, depending on the choice of support surface to confirm either its horizontal or vertical position.GLASS CUTTER-JEWELER
Work with roller glass cutter will be much more accurate if the basis for such processing, as shown in the figure.










