PD Ruler Pupil Distance Measuring Tool | 0–100mm Optical

Optical PD Ruler – Accurate Pupil Distance Measurement

Get precise pupil distance (PD) readings with this lightweight, easy-to-use PD ruler. Designed for opticians, optical dispensaries, hospitals, and pharmaceutical suppliers, this ruler measures inter-pupillary distance quickly and accurately — an essential reference tool for fitting eyeglasses and contact lenses correctly.

Key Features

• Wide Measurement Range: Covers 0–100mm to accommodate a broad range of pupil distances for adults and children alike.
• Vernier Scale Precision: Clear, easy-to-read graduated markings ensure accurate readings every time.
• Lightweight PVC Construction: Durable, rigid white PVC keeps the ruler flat and stable during use.
• Compact & Portable: Slim profile (approx. 21 × 5 × 0.7 cm) fits easily in a lab coat pocket or eyewear case.
• No Batteries Required: Completely mechanical — always ready to use with no charging or power source needed.
• Ideal Promotional Item: Perfect for optical clinics, hospitals, and medical supply retailers as a professional reference tool.

Specifications

What's in the Box?

• 1 × PD Ruler (White PVC)

Note: As with all manually measured tools, a tolerance of 0–2mm is considered normal. Screen color representations may vary slightly from the actual product.

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Learn more: National Eye Institute on eye health

Frequently Asked Questions

Q: What is a PD ruler used for in optical settings?

A: A PD (pupil distance) ruler is used by opticians and eyewear professionals to measure the distance between a person's pupils. This measurement is essential for correctly positioning lenses in eyeglass frames to ensure clear, comfortable vision. This ruler covers a range of 0–100mm, making it suitable for both adult and pediatric use.

Q: Is this PD ruler suitable for home use when ordering glasses online?

A: Yes! Many people use a PD ruler at home to take their own pupil distance measurement before ordering prescription glasses online. Simply hold the ruler against your face at eye level in front of a mirror and read off the distance between the centres of your pupils. Note that a ±2mm tolerance is normal for manual measurements.

Q: Does this ruler require any batteries or setup?

A: No batteries or setup are required. This is a fully mechanical PVC ruler — just take it out of the packaging and it's ready to use immediately.