TM 10-8400-203-23 4-2.  TECHNICAL  PUBLICATIONS  -Continued NUMBER I TITLE TM  11-5965-286-14 Operational,   Organizational,   Direct   Support, General  Support  and  Depot  Maintenance Manual  (Including  Repair  Parts  and  Special Tools  Lists):  Headset-Microphone  Kit MK-1697/G. 4-3. IDENTIFICATION AND DESCRIPTION OF ITEMS The  principal  items  comprising  the  Models  DH-132A  and  DH-132  may  be  identified  and  divided  into  three categories:  Helmet  shell  items,  liner  items,  and  communication  items  (figures  4-1,  4-2,  and  4-3). Figure  4-1.  Helmet  model  DH-132,  left  front  view  with  microphone-headset, 4-2