Click here to download Manual

Digital PD Ruler model INS-11041.

PD Meter is a digital precision optical instrument used to measure distance between human pupils in the process of optometry.

Power off automactically by lying it down after operation; while power on automatically when picking it up.

1 Battery: 23A 12 battery

Dimensions: 9 x 7 x 3 in / 23 x 17 x 7 cm

Weight: 5.10 oz / 144 g