PD scale/ruler for measuring pupillary distance during spectacle dispensing and lens-order preparation.
Use at eye level with your normal monocular or binocular PD procedure and record the measurement in millimetres.
How to use
Position the PD scale at eye level across the bridge area, align the scale consistently, and read the required pupillary-distance measurement in millimetres using your normal monocular or binocular PD procedure. Record the reading immediately.
When to use
Use when taking or rechecking pupillary distance before spectacle ordering, lens centration, or dispensing verification.
Where to use
Use at the optical dispensing counter, refraction area, or measurement desk.
