(19)

(11)

EP 1 125 099 A1

(12)

(43) Date of publication: 22.08.2001 Bulletin 2001/34 (21) Application number: 99949202.8 (22) Date of filing: 11.10.1999

(51) International Patent Classification (IPC)7: G01F 15/06, G01F 15/075 (86) International application number: PCT/GB9903/367 (87) International publication number: WO 0025/097 (04.05.2000 Gazette 2000/18)

(84) Designated Contracting States: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE (30) Priority: 28.10.1998 GB 9823560 (71) Applicant: Brulines Limited Preston Farm Business Park,Stockton-on-Tees TS18 3TB (GB)	(72) Inventor: WILSON, Brian,Brulines Limited Stockton-on-Tees TS17 0NW (GB) (74) Representative: Wilson, Peter et al Markgraaf Patents Limited,The Crescent,54 Blossom Street York YO24 1AP York YO24 1AP (GB)