new instrument most accurate Monocular/Binocular PD measurements - no bulb, LED light - wide LCD window displays: 3 measurements are given digitally in a single super large LCD window (Right, PD, Left) - measurements available for a single eye PD or for both eyes PD - automatic power shut-off after 2 minutes
Specification:
1) Range of measurement:
   a) Binocular: 46/82mm
   b) Monocular: 23/41mm
2) PH: 12-28mm
3) LD: 6-20mm (distance form cornea to lenses)
4) Working distance-measuring grades: 30cm to infinity
5) Indication error: d"0.5mm
6) Asymmetry error: d"0.5mm
7) Rounding error: d"0.5mm
8) Automatic shut-off: 2 minutes without using
9) Power source: DC 1,5V (1 piece AA battery)
10) Overall dimensions: 220x 160x 60mm
11) Weight: 600g