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surfaces of radius as low as 12 mm (½"), a special instrument, NOVO-CURVE, is available - See "Related
equipment" on page 34.
Gloss is measured by integrating the total amount of light reflected in the specular direction (i.e. the equal
and opposite angle) from a test area on a sample surface. The dimensions of this area are determined by
the angle, which is, for example, in the case of a 60° Glossmeter, an ellipse measuring 10 mm x 20 mm
(0.4" x 0.8").
Gloss is also a directional phenomenon, and materials such as fabrics, wood and brushed finish metals,
may appear more glossy when measuring along the fibres or grain, than across.
10 MAINTENANCE
The Elcometer 402 Novo-Gloss™ Glossmeter is designed to give many years reliable service under normal
operating and storage conditions.
With the exception of replacement of the lamp(s) the gauge does not contain any user-serviceable
components. In the unlikely event of a fault, the Elcometer 402 should be returned to your local Elcometer
supplier or direct to Elcometer. Contact details can be found on the outside cover of these instructions and
at www.elcometer.com
10.1 Calibration tile
Calibration standards (Gloss Tiles) should be kept scrupulously clean and should be stored safely when not
in use. The surface should never be touched with fingers or wiped with a solvent cloth.
Cleaning should be carried out using the dry cloth provided or using dry, compressed air. If necessary the
tile may be wiped with a cloth moistened with warm soapy water and dried with a lint-free cloth.
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