Straight Edge PD Ruler (10-Pack)

Straight Edge PD Ruler (10-Pack)

• Our newest PD ruler is now indispensable tools. Not only do they accurately measure Puillary Distance with three different printed scales.
• Screw thickness gauge both printed on the rear of the ruler.They are comfortable, lightweight and medium thickness, Choose from two different styles. Nose bridge holds the rules stationary and perfectly centered. Measures from the center outward to give both monocular PD readings without subtraction or moving the ruler.