SK-XDB Binocular Head SK-XDT Trinocular Head - Objective Lens 4x 10x 20x 40x 60x - The Colour Corrected Infinity Optical System - New sculpt and durable frame - Good radiant system and mold-proof system - Inverted type with binoc / trinocular head
PB :Binocular Head PT: Trinocular Head - Magnification 40x 100x 200x 400x 1000x - Eyepiece 10x, Objective 4x 10x 20x 40xs 100xs - Rotate Circular Stage - Built-in Illumination - The Colour Corrected Infinity Optical System - New sculpt and durable frame - Good radiant system and mold-proof system - Polarizing application with swing-in-out condenser