An item designed to be fitted over the nose to prevent escape of air during expiratory volume measurement.
NSN 6105-00-553-8943
NSN 5985-00-553-9735
NSN 6135-01-089-4888
NSN 6130-00-915-6313
NSN 6685-00-997-6372
NSN 6685-01-527-7549
NSN 6130-01-391-2676
NSN 5920-01-468-2980
NSN 5998-01-259-4680
NSN 6645-01-370-5264
NSN 5895-00-023-2256
NSN 5998-01-063-5325