U.S. Army MI-I-5 Optical Gas Mask

The U.S. MI-I-5 Optical Gas Mask was developed by the Army for use with optical sighting devices.  The distance between the small circular eyepieces could be adjusted to accomodate different instruments and head sizes.  The filter clips to the head harness behind the user's head, with two hoses drawing air up towards the eyepieces.  It was produced in both black and gray (green) rubber.  Both of these examples were made by Acushnet, in 1940 and 1941 respectively.

PATENT

 

Similar masks in my collection:  U.S. NDO Mk I, U.S. ND Mk III, U.S. ND Mk IV

Rubber stamp
Rubber stamp

Manufacturer and date stamp on chin of black MI-I-5 "LOT 75 Acushnet M6 10-40"

press to zoom
Rubber stamp
Rubber stamp

Stamp on flutter valve of black MI-I-5 "N-2 CR Co 1-41 227"

press to zoom
Rubber stamp
Rubber stamp

Manufacturer and date stamp on chin of green MI-I-5 "Lot W109 Acushnet M2 1-41"

press to zoom
Rubber stamp
Rubber stamp

Stamp of flutter valve of green MI-I-5 "O S P-86-1 2-41"

press to zoom
Carrier
Carrier

Bag for "Optical Gas Mask M1"

press to zoom
Carrier
Carrier

Markings on inside flap of bag "E II R2 E.A.E. LOT 53"

press to zoom