"CONSISTS OF A COMPOSITE PLATE WITH 20 HOLES FROM 5/32"" TO 3/4"" IN 1/32 INCREMENTS; 9 NOTCHES AND A RADIUS; HOLES, NOTCHES AND RADIUM AREA ALL HAVE KNOWN DEFECTS; MATERIAL 4000 SERIES STEEL (4340 OR 4130)"
FTLD
FUNCTIONAL DESCRIPTION
USED TO CALIBRATE AND VERIFY PROPER OPERATION OF EDDY CURRENT PROBES AND INSTRUMENTATION