Hydrometers for determining the specific gravity of liquids. Two specific gravity ranges available. Each unit is housed in a re-usable storage tube. Additional Info: Heavy Liquid Hydrometer Package Size(L x W x H): 12 X 4 X 1.5 (IN) Categories: Hydrometers, Heavy HTS Code: 7017.90.5000 UNSPSC: 4.1113e+007 Country Of Origin: CHINA