(19)

(11)

EP 0 958 489 A1

(12)

(43) Date of publication: 24.11.1999 Bulletin 1999/47 (21) Application number: 98957000.0 (22) Date of filing: 30.11.1998

(51) International Patent Classification (IPC):  G01M 3/ 28( . ) (86) International application number: PCT/GB1998/003578 (87) International publication number: WO 1999/030124 (17.06.1999 Gazette 1999/24)

(84) Designated Contracting States: DE FR IT (30) Priority: 09.12.1997 GB 19970025912 (71) Applicant: Cromar Sales And Service Limited Dyce, Aberdeen (GB)	(72) Inventor: MCKAY, Frederick, D. Dyce Aberdeen AB21 7FS (GB) (74) Representative: Orr, William McLean  URQUHART-DYKES & LORD 5th Floor, Tower House Merrion Way Leeds West Yorkshire, LS2 8PA Leeds West Yorkshire, LS2 8PA (GB)