Sunwin Digital Pd Meters Optical Pd Meter Digital Pupilometer Pupillary Distance Pd/vd Meter PDs
Product Description
Sunwin Digital Pd Meters Optical Pd Meter Digital Pupilometer Pupillary Distance Pd/vd Meter PDs
Specification: <br>PD Meter is a precision optical instrument used to measure distance between pupils in the process of optometry for spectacles <br>Effective range of measurement: <br>Binocular pupillary distance: 45-82mm <br>Left or right pupillary distance: 22.5-41mm <br>Absolute value of indicated error: ≤0.5 mm <br>Absolute value of asymmetrical error: ≤0.5 mm <br>Absolute value of rounding error: ≤0.5 mm <br>Focus range: 30cm to infinity <br> Power source: <br>Voltage: DC 3V <br>Specification: 5#AA battery (the batteries are not included) <br>Quantity: 2 pieces <br>Time for automatic shut-off: About 1 minute after stopping operation, or turn it off manually <br>Size: 221mm(L) x 164mm(W) x 63mm(H) <br>Weight: 0.66kg <br>What is in box ? <br>1 X Digital PD Meter <br>1 x English User Manual
Technical Specifications
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