DEEP SIX HYDROMETER, The world s first wide-range specific gravity meter that takes its reading from 6 inches below the surface, Every unit is pre-calibrated and individually tested for guaranteed accuracy, Easy to use with a new, revolutionary self-leveling feature, , UPC : 096316008779, Size : 11 INCH, Length : 12, Width : 10, Height : 11, Product Type : Aquatics - Water Testing / Hydrometers, Shipping Dimensions: 12x10x11 SKU: BC001469