HY-18 Digital PD Ruler

CTA-300 Smartphone Adapter converts smart phones into professional digital eyepieces for the traditional optical Instruments. Just attach the equipped smartphone

Feature:  High illumination white LED light source.  Rechargeable green lithium battery.  Fully charged can be used for

Feature:  Non-mydriatic image with reliable quality.  45⁰ full-circle design.  Switching anterior-posterior, para-position compensation lens.  Split-line aligning

Feature:  Two-step magnifications: 10X，16X.  All the Optical lenses are moisture proof, mildew proof and anti-reflected treated.  Excellent