Hardness testers measure a material's resistance to indentation. This calculation is determined by measuring the permanent depth or projected area of the indentation.
Optical comparators are instruments that project a magnified image or profile of a part onto a screen for comparison to a standard overlay profile or scale.
Video cameras take continuous pictures and generate signals for display or recording. They capture images by breaking them down into a series of lines. This search form does not include consumer devices such as camcorders.
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