REGULATION 12 SCHEDULE 3 4.4.7 Radius of Curvature 4.4.7.1 Principle The external form of the Device is checked to ensure all parts required have a radius of curvature greater than 12mm, and thus no sharp edges. 4.4.7.2 Apparatus An appropriate radius gauge, made of metal (steel or aluminium) and not more than 2mm thick shall be used. The shape of the gauge is shown in Figure 5, where r shall be 12mm ±0.1mm and α shall be 60° ±2°. Figure 5: Radius Gauge 4.4.7.3 Procedure For all profiles of depth greater than 1mm ±0.1mm place the gauge in the areas of minimum radius of curvature of the area to be tested. If both ends of the gauge touch the surface of the Device then that area passes the requirement. Figure 6 illustrates the procedure and the pass and fail conditions. Figure 6 (a): Pass Condition Last update: 3 January, 2017 253
World Rugby Handbook
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