An item designed to be fitted over the nose to prevent escape of air during expiratory volume measurement.
NSN 5960-01-487-2175
NSN 6220-01-401-5337
NSN 5998-01-496-0933
NSN 5905-01-385-9389
NSN 2925-01-464-3093
NSN 4140-00-104-7323
NSN 5905-00-490-2960
NSN 6130-01-261-0720
NSN 6685-00-269-6444
NSN 6685-01-090-4392
NSN 5960-01-632-6576
NSN 6145-01-335-4702