Seattle Sight Displays
Notes:
�The [Seattle Sight] Helmet series of head-mounted displays are designed to be an unobtrusive display for a military or industrial helmet . The optical head is mounted on a prehensile removable arm. The optical head can be adjusted precisely for the user's eye and the flexible arm allows the user to deflect the optical head to the side for viewing and return it to the preferred eye position when finished.
The optics can be see-through or light blocking by selection of the back lens. The swivel can be mounted on either the right or left side to match the dominant eye of the user as desired. �
Image and info obtained from http://www.seattlesight.com/helmet on 9/2/98.