White PD Ruler - 7 Inch

The White PD Ruler - 7 Inch offers a 7" scale (9/16" wide) with precise millimeter and 1/16" graduations, ideal for optical measurements.

7-inch ruler with a 9/16-inch width, designed for accurate pupillary distance (PD) measurements
Dual measurement scales: millimeters and 1/16 inches for versatility
White color ensures easy readability in various lighting conditions
Durable and lightweight, suitable for frequent use in optical practices
Compact design, convenient for both storage and on-the-go use