For mechanical balances, the Dial-O-Gram and Cent-O-Gram, are precise, economical choices for specific gravity weighing. No level adjustments are required with the three-point beam design, and quickly zero with a convenient zero adjust knob. Standard Features 0.01 g or 0.1 g sensitivity Equipped for specific gravity weighing Four-tiered notched beams Easy-to-read vernier dial on model 310 See-through poise on model 311 High precision and remarkable value Three-point beam eliminates need for level adjustment Quick-zeroing with zero adjust knob