PD-28 Digital PD Ruler / Pupillometer Specifications:
Range of Measurement |
45-82mm (both eyes), 22.5-41mm (each eye) |
Indication Error |
<0.5mm |
Rounding Error |
<0.5mm |
Range of Focusing Point |
30cm-Unlimited |
Power |
DC 3V (AA Batteries x 2) |
Automatic Shut Off Time |
1 Minute |