An item designed to be fitted over the nose to prevent escape of air during expiratory volume measurement.
NSN 5910-01-050-7462
NSN 6610-01-376-9199
NSN 6610-01-206-5278
NSN 6320-01-290-0514
NSN 4140-00-690-5288
NSN 6135-01-334-3935
NSN 5935-00-252-6868
NSN 6110-01-032-2899
NSN 6645-01-568-7517
NSN 5998-00-919-2620
NSN 5945-00-639-9848
NSN 6130-00-549-2607