User's Manual

1.2 Technical specications
Optical system
Magnication 3X
Exit pupil diameter 6.5 mm
Field Of View (FOV) 6°
Diopter adjustment range ± 2.0D
Eye relief 56 mm
Photopic, integral transmission 75 %
Physical specification
Material housing Anodized black aluminum, black
rubber cover
Dimensions (L × W × H): 103 mm × 45 mm × 45 mm
(4” × 1 ¾” × 1 ¾”)
Weight 220 g (7.8 ounces) including
rubber cover
Mechanical interface
The 3X-C is provided with a 30 mm diameter tube for mounting
Environmental specification
Temperature range -25 °C to +40 °C
Humidity +40 °C, RH: 95 %
Immersion 0.5 m (1.64 ft)