Test ring

48 (15.28mm), 48.5 (15.44mm), 49 (15.60mm), 49.5 (15.76mm), 50 (15.92mm), 50.5 (16.07mm), 51 (16.23mm), 51.5 (16.39mm), 52 (16.55mm), 52.5 (16.71mm), 53 (16.87mm), 53.5 (17.03mm), 54 (17.19mm), 54.5 (17.35mm), 55 (17.51mm), 55.5 (17.67mm), 56 (17.83mm), 56.5 (17.98mm), 57 (18.14mm), 57.5 (18.30mm), 58 (18.46mm), 58.5 (18.62mm), 59 (18.78mm), 59.5 (18.94mm), 60 (19.10mm), 60.5 (19.26mm), 61 (19.42mm), 61.5 (19.58mm), 62 (19.74mm)