WH01 check out type (5m): to hang, or stand desktop, with mirrors, crystal frame, carrying pouch, instructions rods.
As the standard type: ECheck the distance: 5m, 2.5mCheck the range: from 4.0 to 5.3Sight record: five records, decimals records, scores recordedVision Light Box Size: 5m 846 * 283 * 18 mm 2.5m 710 * 283 * 18 mmProduct Code:WH01 check out type (5m): to hang, or stand desktop, with mirrors, crystal frame, carrying pouch, instructions rods.WH02 indoor hanging-type (5m): hanging, with a direction stick.WH04 indoor hanging-type (2.5m): hanging, with a direction stick.
The standard logarithmic visual acuity chart
