The Ohaus 730-00 triple beam balance is accurate and dependable, and has been the standard in science classrooms for decades. Whether weighing solids, liquids, powders or even animals, the 730-00 is well equipped to handle the job. It offers the accuracy and convenience of a top loading balance, while allowing students to gain hands-on experience through manipulation of the poises and attachment weights (not included) - as well as the ability to visualize mass measurement principles.