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The peculiarity of this method is that I control the position of the measured plane. The measurement scheme can be drawn up arbitrarily, based on the desired degree of detail of the surface topography. In each new position of the bubble level, according to the measurement scheme, I set the bubble exactly in the central position relative to the scale by controlling the jacks. Using microcators, I see what linear movement occurred, and I can mathematically recalculate what linear movement occurred directly at the measurement points. In this way, maximum measurement accuracy is achieved, since even with a bubble level of 0.02 mm per 1000 mm at a distance of 1000 mm, one can see from the bubble the rise of one edge to a linear size of 0.001 mm.