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COMPENDIUM INCLINATION MEASUREMENT
WYLER AG, WINTERTHUR / SWITZERLAND

FOR THE MEASUREMENT OF FLATNESS, THE FOLLOWING OPTIONS ARE AVAILABLE:
• Surface WYLER (GRID), standard flatness measuring method using a grid
• Rectangle
• Partial surface based on the measuring object Surface WYLER
• U jack / GGG – P – 463 c
• U jack / GGG – P – 463 c with layout proposal

For a precise measurement, the following preparatory work has to be done:
• The object to be measured must be adjusted horizontally in both directions (longitudinal and trans-
versal) as well as possible (within approx. 50 μm/m). If not done, measuring errors may occur if the
measuring instrument is not placed exactly in line with the measuring direction
• The object must now be divided in the measuring step length. The step length has to be such that
an equal dimension of overlapping of the base length with each step is possible
• The best possible step length when using a 150 mm base is 126 mm. As a guideline it should be
noted that if the surface is of bad quality (rough, buckling) then the step length should be as close
as possible to the optimal length. (in this case 126 mm)
• In addition, it is important to make sure that the base as a whole comes to lay on the surface when
placed in the measuring position
• The grid is to be marked on the surface plate with a pencil that does not apply a thick layer

The figure on the right shows the grid of a measuring and
setting plate with the dimensions 800 x 1200 mm and a
measuring device with a base length of 200 mm

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