SCHEDULE 1 REGULATION 12 Figure 1. Typical zones of Coverage for Headgear Sizes are based on the following: Table 2. Head sizes Diameter (cm) 50 51 52 53 54 55 56 57 58 59 60 61 62 63 Size 6 ¼ 6 ⅜ 6 ½ 6 ⅝ 6 ¾ 6 ⅞ 7 7 ⅛ 7 ¼ 7 ⅜ 7 ½ 7 ⅝ 7 ¾ 7 ⅞ XXS XS S M L XL XXL 3.3.2 Ear Aperture The ear aperture of the headgear shall have a linear dimension (G) not less than 25mm and not more than 30mm. It may have a cross mesh or similar design characteristic but this must not significantly affect the hearing of the wearer. Where a cross mesh is used, the linear dimension of any ear apertures shall not exceed 30 mm. 3.3.3 Vision Horizontal field: the headgear shall provide peripheral vision clearance of at least 105° to each side of the longitudinal vertical line (median plane) when the headgear is positioned in accordance with the Manufacturer’s Instructions (see Figure 2). Vertical field: the headgear shall provide Last update: 14 January, 2015 196
World Rugby Handbook
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