Gloss is one of the criteria that is always taken into consideration when it goes about quality assessment. Correct analysis of the gloss of a certain surface helps to make conclusions about the quality and whether the necessary standards have been met during the production or repair process. Excessive or insufficient gloss may be an indication of the application of the wrong methods and time of the surface treatment, wear-out, deteriorating condition, and loss of the protective function, since gloss has not only optical effect, but very often, it also performs protective function if coating is applied.
Measurement on the even flat surfaces is an easy-to-perform task, but it often happens that the surface is curvy or the area to be measured is very small. For such challenging tasks a small portable gloss meter has been designed and due to this device even the measurement on the most complicated surfaces has become feasible. Operation of the gloss meter is easy, but the user should remember to be careful to obtain the most accurate results. The sample to be measured or some part of it must be in a stable position as well as the meter and for each separate part of the curvy surface the upper and lower gloss limits should be determined separately. The convenience and possibility to get the best measuring position is also provided by the design of the measuring instrument. A small measuring window as well as the support area is so small that the device can be applied even on the tiniest parts of the surface. The examples of curvy surfaces may be numerous: parts of the automobiles, bottles, ceramics, window frames, doors, such materials as marble or granite etc. The gloss meter applied on such surfaces carries out the measurement continuously and thus, even the most complicated geometry of the surface, where the character of the surface changes does not prevent the device from getting very accurate data. Application of the other measuring instruments for this purpose does not compare in accuracy with the results provided by the gloss meter.