الوصف

BRT-II Digital PD Meter The BRT-II Digital PD Meter provides a digital function for the optometrist to measure the distance of people's pupils. Product Description: 1. Adjusting the mechanical springs to detect the reflection of cornea. Sample directly, continuously and accurately; 2. Using high precision linear potentiometer, advanced intelligent electronic system, Digital display of measurements, intuitive, legible, accurate; 3. LED light, low-power design, longer using time; 4. Provides *2.0 D compensation degree. Specifications: Data range: Binocular PD:*6～*2mm Monocular PD:*3～*1mm Indication error: ≤ 0.5mm Rounding error: ≤ 0.5mm Distance range: **0mm ~ ∞ Voltage: DC 6V (4 pieces of AA batteries) Net weight: **0g Inner box size: **2mm (L) x**3mm (w) x*1mm (H)