This instrument is used to measure pupil distances accurately without parallax errors. Operation is quickly and easily understood, readings are taken fast with minimal inconvenience to the patient and practitioner. Readings are displayed digitally: the right and left monocular PDs are displayed either side of the overall PD. 

The patient headrest, which is lightly cushioned for patient comfort, holds the instrument steady whilst readings are taken. 

Specifications: 

·          PD Range           44 to 83 mm 

·          Monocular           22 to 41.5 mm 

·          Accuracy            0.5 mm 

·          Power                4 x AA batteries 

·          Auto power off   After 1 minute 

Dimesions: 21.4 x 15 x 5.1 cm 

Weight: 600 g