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basics of testing

basics of testing

testing: testing procedures are necessary during the entire manufacturing process. is
Before machining of the workpieces on a sample basis to examine the dimensional stability and the external condition of the blanks. confirmed by the control during the production and guarantees the quality of the worker-friendly version of its labor contracts.

Check: Check is determining whether the test item given conditions on shape, length, angle or surface structure of a lens with a magnifying glass is an example of non-dimensional scanning. Determines the size of an existing property, such as center thickness of a lens, is referred to as the dimensional testing.

Measure: Measure is to compare the variables to be measured Formerly a (scale). For a measurement, two conditions are necessary:

• measurement must be defined clearly
• The comparative size (unit), or The former must be determined by a convention

teaching: Teaching is determining whether the test item in terms of shape and sizes between predetermined limits. The product is not reading. The review of the curvature of a spectacle lens with a radius template is thus a doctrine, the determination of the effect with the peak energy value is a fair.

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