Grafton PD Meter

Details

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

MAIN TECHNICAL INDEXES

Range of data display?Binocular pupillary distance?44?83mm, Left or right pupillary distance?22?41.5mm

Effective range of measurement?Binocular pupillary distance?45?82m, eft or right pupllary distance?22.5?41mm

Indication error?≤0.5mm

Rounding error?≤0.5mm

Distance of target?30cm?∞

Power source?Voltage?DC 3V, Specification?AA battery, Quantity?2 or 4 pieces

Time for automatic shut-off?1 and a half minute after stopping operation

Overall dimensions?219mm(L)×169mm(W)×86mm(H)

Weight?0.69kg