Material:Zinc alloy case Military type Engineering usage Wire sight Metal case(Aluminum or zinc alloy) 1:25000meter standard map scales Liquid filled for reliable readings Both the standard 0 - 360 degree scale and 0 - 64Mil scale Floating luminous dial for easy readings at night Weight: 136g for zinc alloy) Unit size: 77 x 58 x 26mm Packing: Each pc into a color gift box, 12pcs per inner box, 144pcs per export canton NW.:20.5KGS ; GW.: 22.5KGS; Dimension: 38 x 37.5 x 24.5CM