Eyepiece magnification: 12.5X Alf wide-angle eyepiece Focal length of objective lens: 200mm

Working distance: 192.74mm

Primary mirror magnification: 5X--25X, electric/manual continuous poleless doubling

Field of view diameter: 11mm-82.5mm Visual adjustment range: ±6D

Pupil distance adjustment range: 55mm-75mm

Illuminating source: four groups of light sources, using 15V/150W, cold light coaxial lighting

German OSRAM halogen lamp, four-level dimming Coaxial illuminations: ≥50000LX

Horizontal arm extension radius: ≥1230mm Vertical adjustment range: ≥550mm

Fine-tuning speed and stroke:≤1.5mm/s,≥40mm

X/Y coordinate moving speed and range: ≤1.5mm/s, ≥40mm Power supply voltage and frequency: 220V+10% 50Hz