Another addition to the Torsion line of optical projection balances is the one pictured on the left—the PL-800. Covering the range of 0 to 800 grams with an accuracy of ±0.01 grams, a precision (standard deviation) of ±0.005 grams, this balance, like the PL-1 and PL-2, features weighing
The New Torbal PL-800 Optical Projection Balance
