VV LIINNCXM Optical Digital Pupillary Distance Meter Led Pd Meter PD Meter Pupilometer Interpupillary Distance Measuring Tool Ophthalmic Equipment with LCD Display (Battery Not Included)

• 【High-Accuracy PD Measurement】: Our pupillary distance meter ensures precise and direct point-taking for reliable optometry results, with a resolution of 0.5 mm. It covers binocular measurements from 45 to 82MM and monocular from 22.5 to 41MM, making it ideal for various vision needs
• 【Effortless Operation & Adjustable Viewing】: Designed for simplicity, the Pupilometer features a direct adjustment lever and a viewing distance selector, allowing quick and accurate measurements for all viewing scenarios without complicated steps
• 【Energy-Efficient LED Design】: Equipped with adjustable brightness LED lights and low power consumption, this Digital Pupilometer extends circuit board life while offering vision compensation up to +2.0d, ensuring long-lasting performance and user comfort
• 【Automatic Shutdown & Data Retention】: To save battery and prevent drain, the PD Meter shuts off automatically after 1 minute or with a manual button press. It retains the last reading on screen and stores data in memory upon restart, as long as the slide control remains untouched
• 【Compact & Reliable Storage】: Store the pupil distance meter flat to trigger automatic shut-off, maintaining its condition and ready for next use. This smart feature ensures convenience and durability for everyday optometry tasks

Range of measurement: 45 to 82MM (both eyes), 22.5 to 41MM (each eye) Indication error: ≤0.5 mm Rounding error: ≤0.5 mm Range of focusing point: 30 cm~∞ Electric Voltage: DC 3V (5# AA battery×2 pieces) Time for automatic shut-off: 1 minute