(19)

(11)

EP 0 362 336 A1

(12)

(43) Date of publication: 11.04.1990 Bulletin 1990/15 (21) Application number: 89903616.0 (22) Date of filing: 09.03.1989

(51) International Patent Classification (IPC):  G01B 7/ 00( . ) G01B 7/ 012( . ) (86) International application number: PCT/US1989/000918 (87) International publication number: WO 1989/008817 (21.09.1989 Gazette 1989/23)

(84) Designated Contracting States: AT BE CH DE FR GB IT LI LU NL SE (30) Priority: 10.03.1988 US 19880166222 (71) Applicant: NAWSIR INC. Peapack, NJ 07977 (US)	(72) Inventor: SCHAFFER, Michael, J. Peapack, NJ 07977 (US) (74) Representative: Boydell, John Christopher  Stevens, Hewlett & Perkins 1 Serjeants' Inn Fleet Street London EC4Y 1LL London EC4Y 1LL (GB)