Favorites in classrooms and industries worldwide, the Cent-O-Gram^® balance offers high precision and remarkable value. The three-point base, special floating bearing principle and beam design eliminates the need for level adjustment.  Zeroing is quickly achieved by means of a zero adjust knob at the end of the beam. With aluminum pressure castings for the base and beam assembly, agate bearings, steel knife-edges, and Capacity 311 g.