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