![16485](https://img.wattagnet.com/files/base/wattglobalmedia/all/image/2015/04/an.16485.jpg?auto=format%2Ccompress&q=70&w=400)
Renco Corporation offers the Sono-Grader. This hand-held ultrasound device allows the user to enter the weight manually with a keypad or use a docking station that is directly supported with an electronic scale. It stores 2,000 test results, including the identification number and weight of each animal.