Optical Digital PD Meter CP-32BT Pupilometer Interpupillary Distance Tester Description: It is an ideal digital precision optical meter for measuring distance between human pupils in the process of optometry. It is designed in a scientific and reasonable way, integrating technologies on optics and microelectronics. It has the most exactitude configuration, measuring more correctly. It also has the focusing button for distance converting. The pupil distance is measured by making the papillary light point and measuring light in direct line, in the way of monocular eye or binocular eyes. Specifications: Effective Range of Measurement: Binocular papillary distance: 45 ~ 82 mm Left or right papillary distance: 22.5 ~ 41 mm Indication Error: ≤ 0.5 mm Rounding Error: ≤ 0.5 mm Distance of Target: 30 cm ~ ∞ Power Supply: DC 1.5 V; 1 x 5# AA Battery (Battery is not included.) Time for Automatic Shut-off: About one minute after stopping operation Dimension: 265 x 200 x 80 mm Weight: 0.8 kg
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