◆ Contains 2 lighting sources: High Directivity Green Backlight and Low Angle Blue Ringlight
◆ High Directivtiy Green Light makes the outline of objnect and edge contrast clear. No fuzzy grayscale gradients will affect the focus and cause the midjugement and accuracy.
◆ Mechanism is easy to disassemble and convenient for maintenance.
◆ Suitable for detecting the measured object, screws and fasteners 
◆ Customization service is offered. 
I agree