Bracket Hole:∮76-∮78mm,
Control High Rang:50mm,
Spin Angle:Horizontal±15°,
Straight: ±15°,
Main Staight:270°,
Materiel:Hard Aluminum Alloy,
Total Height:500mm,
Zoom:200-500,
Magnification:7X-45X.
Special large 10x double eyepiece,0.5x view lens,Is good for jewelry business tools.Use hard,stable small machine,Excellence optical design,Big zoom & wide area,clear to empiricism.
The optic of eyepiece and lens is made in CHINA.