TESTS WERE MADE ON THE FOLLOWING SUBJECTS: CONTROLS, ALARM INDICATION, AUDIBLE AND VISIBLE ALARM INDICATORS, DETECTION PERFORMANCE, AND A MEASUREMENT OF THE TIME-VARYING GENERATED MAGNETIC FIELD. OTHER TESTS PROVIDED INFORMATION ON OPERATION NEAR METAL WALLS, BATTERY CONDITION INDICATION, BATTERY LIFE, RADIO INTERFERENCE, ELECTRICAL SAFETY, AND DATA SUPPLIED BY THE MANUFACTURER. THE FOLLOWING SEVEN WEAPON DETECTORS WERE TESTED: TRANSFRISKER 6030 (FEDERAL LABORATORIES, INC.); ELECTRO-SEARCH (SOLCO ENGINEERING CO.); MODEL 15 SQUEALER (RENS MANUFACTURING CO.); LAWMAN L-8 (LAW ENFORCEMENT EQUIPMENT RESEARCH, INC.); GB-3 MAGNETIC LOCATOR (SCHONSTEDT INSTRUMENT CO.); FRISKEM MK7A (INFINETICS, INC.); AND FRISKEM MK7B (INFINETRIES, INC.). TWO OF EACH DETECTOR WERE PURCHASED ON THE OPEN MARKET FOR TESTING; THE MANUFACTURERS WERE NOT MADE AWARE THAT THEIR EQUIPMENT WAS TO BE TESTED. (SNI ABSTRACT)