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PD Meters & Rulers
PDM

 
Technical data
Measure range  : two eye pupil distance:44~83mm, Can measure single eye.
Availability measure range  :

two eye pupil distance:22~41.5mm
Left/right distance:22.5~41 mm

Show error : <_0.5mm
Aim distance : 30cm~"
Size : 214mm*150mm*51mm
Shut off the power by itself : 1 min after stopping of using
Rounding error : <_0.5mm
 Power : DC 6V 4pcs of batteries
Weight : 0.8kg
 
WE STAND FOR GOOD QUALITY, REASONABLE RATES & HUMBLE SERVICE.