... , with mirrors, crystal frame, carrying pouch, instructions rods. As the standard type: ECheck the distance: 5m, 2.5mCheck the range: from 4 ... 2.5m 710 * 283 * 18 mmProduct Code:WH01 check out type (5m): to hang, or stand desktop, with mirrors, crystal frame ... hanging, with a direction stick.WH04 indoor hanging-type (2.5m): hanging, with a direction stick. The standard logarithmic visual acuity chart