(19)

(11)

EP 2 059 769 A2

(12)

(43) Date of publication: 20.05.2009 Bulletin 2009/21 (21) Application number: 07789094.5 (22) Date of filing: 01.08.2007

(51) International Patent Classification (IPC):  G01D 4/00(2006.01) G01D 4/16(2006.01) G01D 4/10(2006.01) (86) International application number: PCT/GB2007/002925 (87) International publication number: WO 2008/025939 (06.03.2008 Gazette 2008/10)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR Designated Extension States: AL BA HR MK RS (30) Priority: 31.08.2006 GB 0617147 (71) Applicant: Ewing, Tanya Barbara Perth PH1 5HP (GB)	(72) Inventors: McCORKINDALE, Kenneth Perth PH1 5HP (GB) SCUSE, Jeremy Perth PH1 5HP (GB) (74) Representative: Walker, Stephen  Murgitroyd & Company Scotland House 165-169 Scotland Street GB-Glasgow G5 8PL GB-Glasgow G5 8PL (GB)