Ruler calculator, 20CM/8 inch ruler, 8 digit, dual power Features: 8 digit display calculator, battery(included) + solar dual power, 20CM and 8 INCH scale on two edgesProduct size: 208 x 51 x 10MMMain material: HIPS, PSPacking : each piece in a white box; 200pcs/ctn;Carton size: 46 x 36 x 27CMG.W.: 14.5KGSN.W.: 13KGS More ruler calculators pictures please see below: