binocular tube
The adjustable binocular tube with 0-180°optics hinges angle
binocular tube foci
F=170mm
The diameter of vision filed
66mm~10.4mm
Eyepiece magnification
12.5X/18B
Adjustable range of vision degree
±6D
Filter adjuster
Yellow and green filter, heat filter
120°balancing arm with damping
Freely rotate to any position with damping