A Sheen meter is a gloss measuring instrument for measuring specular gloss. Specular reflection has a direct relationship between the ratio of incident light to reflected light and is used as the basis for using the Sheen meter and measuring gloss values.

The Sheen meter is used by many industries, from paper mills to automobiles, and for quality control at every stage of the manufacturing process to measure the gloss of a product to ensure consistency in the manufacturing process.
Gloss is measured with a Sheen meter, which shines a light on the test surface at a specific angle while measuring the amount of reflection. There are many international standards that define methods and specifications for gloss meters used to measure different types of materials.
The light intensity depends on the material and the lighting angle. There are many different geometries available for gloss measurement with the Sheen meter, each depending on the type of surface being measured. There are three types covering the full gloss range, namely 20-degree, 60-degree, and 85-degree gloss meters. However, industries such as paper, ceramics, film, vinyl, etc. have a different angle.
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