After the machine is installed on the foundation frame, the parallelism of the guides of the 12th of the upper surface of the 26 foundation frame is checked by comparing the level of level indications with a division price of 0.05-0.1 mm per 1 m of the length set to the surface of the 26 frame and on the guides 12. Having subtracted the indications of the level when tilting the frame and guide carriages in one direction, or adding the level of level when tilting the frame and guides in different directions, they receive the magnitude of their non -parallelism. If non -parallelity exceeds 0.05 mm per 1 m of length, to reduce it to the permissible limits, the height of the corresponding racks is adjusted with sawing or shab.
