An item designed to be fitted over the nose to prevent escape of air during expiratory volume measurement.
NSN 5905-00-401-1067
NSN 5915-00-155-7626
NSN 5945-01-463-3569
NSN 5905-00-310-4495
NSN 2925-01-604-8984
NSN 5999-01-459-7903
NSN 5920-00-856-4083
NSN 5835-01-085-5487
NSN 5998-00-110-5316
NSN 6220-00-221-5899
NSN 5930-00-912-9130
NSN 5985-00-526-3469