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2. Concrete leveling - Wikipedia

   en.wikipedia.org/wiki/Concrete_leveling

   In civil engineering, concrete leveling is a procedure that attempts to correct an uneven concrete surface by altering the foundation that the surface sits upon. It is a cheaper alternative to having replacement concrete poured and is commonly performed at small businesses and private homes as well as at factories, warehouses, airports and on roads, highways and other infrastructure.

3. Autocollimator - Wikipedia

   en.wikipedia.org/wiki/Autocollimator

   Measuring with an electronic autocollimator is fast, easy, accurate, and will frequently be the most cost effective procedure. Used extensively in workshops, tool rooms, inspection departments and quality control laboratories worldwide, these highly sensitive instruments will measure extremely small angular displacements, squareness, twist and ...

4. Profilometer - Wikipedia

   en.wikipedia.org/wiki/Profilometer

   Critical dimensions as step, curvature, flatness are computed from the surface topography. While the historical notion of a profilometer was a device similar to a phonograph that measures a surface as the surface is moved relative to the contact profilometer's stylus , this notion is changing with the emergence of numerous non-contact ...

5. Total indicator reading - Wikipedia

   en.wikipedia.org/wiki/Total_indicator_reading

   In metrology and the fields that it serves (such as manufacturing, machining, and engineering), total indicator reading (TIR), also known by the newer name full indicator movement (FIM), is the difference between the maximum and minimum measurements, that is, readings of an indicator, on the planar, cylindrical, or contoured surface of a part ...

6. Surface metrology - Wikipedia

   en.wikipedia.org/wiki/Surface_metrology

   Digital Holography: this method provides 3D topography with a similar resolution as interferometry. Moreover, as it is a non-scanning technique, it ideal for the measurement of moving samples, deformable surfaces, MEMS dynamics, chemical reactions, the effect of magnetic or electrical field on samples, and measurement of the presence of ...

7. Flatness (manufacturing) - Wikipedia

   en.wikipedia.org/wiki/Flatness_(manufacturing)

   Metrology of such a surface can confirm and ensure that the required degree of flatness has been achieved as a key step in a manufacturing processes. Two parts that are flat to about 1 helium light band (HLB) can be "wrung" together, which means they will cling to each other when placed in contact. This phenomenon is commonly used with gauge ...