| GENERAL CHARACTERISTICS ITEM DESCRIPTION | C/O ADAPTER,M642/7-1;JACK TELEPHONE,M641/8-1;PLUG TELEPHONE,M642/7-1;JACK TYPE U-179,MJ-103;1.000 FT O/A LG; 1.000 FT O/A WD;THE TESTER SHALL BE CAPABLE OF TESTING FUNCTIONABILITY OF MICROPHONES ASSEMBLED IN M24,M25,M41,M42,AND M43 GAS MASKS BY ACTIVATION WITHAN INTERGAL SOUND SOURCE AND DETECTINGAND DISPLAYING A MICROPHONE |