4
Components
F7 Nose Rest - The testee places their nose on the rest to be correctly positioned.
F8 Observation Window - Two windows for the testee to stare at the target with their eyes.
F9 Brow Bar - The testee’s forehead rests on the brow bar to assist in orienting the pupils.
F10 On/O Key-Presstoturnthedeviceonando.
B1 Battery Compartment-Slidelidtotherighttoreplacebatteries.(2AA)
B2 Monocular Covering Knob -Toseparatelycoverthetestee’srightorlefteyebyturningtheknob.