Milligram balances are precision scales weighing 3 decimal places [0.001 g] readability. Laboratories and universities looking for an affordable lab balance that doesn't need the precision of an analytical balance [4 decimal places] should consider a milligram balances. Precise milligram balances are available from Sartorius, Scientech, AND Weighing, Ohaus, Mettler-Toledo or Adam Equipment.