This European Standard specifies two methods for the determination of the thickness of synthetic surfaces for sports areas, suitable for use in the laboratory and 'in situ'. Method A, a destructive test method, is intended for use: – where the thickness needs to be measured to an accuracy of +/- 0,1 mm; – where the thickness of different layers is to be determined. Method B, a non-destructive test method, is intended for use as a routine check on thickness. e.g. for control purposes or when surveying a large area of synthetic surfacing. It gives measurements to an accuracy between +/- 0,5 mm and +/- 1,5 mm, depending upon the texture.