Pd Meters Rulers

The MAK PDM-A PD Meter is a digital precision optical instrument used to measure distance between human pupils in the process of optometry for fitting spectacles.Details Product Description :  It imply precise optical structure, the line of light is very clear and precise measurement. The measurement results are displayed digitally, and the left eye and right eye measuring values are displayed separately. Simple and rapid measuring operation, and direct PD adjustment lever are possible. Combining with the adjustable viewing distance selecting lever for measuring all kind of the viewing distances, the MAK PDM-A PD measurement is simple and precise. When the measuring operation is finished, the auto power off and memory function, enable to save the power and not to lose the data It can also be used in monocular mode in to the left eye and right eye separately. . Specification : Parameters Effective range of measurement Binocular pupillary distance : 45~80mm Left or Right pupillary distance:22.5~40mm Indication error <_0.5mm Distance of target 30cm ~OO Electric Voltage DC 4.5V(3pcs 5# AA battery) Power 10W Weight 0.6kg Volume 21.5(L)x15(W)x50(H)cm