PM-66 BALANCE ANALYTICAL, DOUBLE PAN, CHAIN DIAL 200 GM.

Capacity 200 gm., sensitivity 0.1 mg., bronze beam, circular
arrestment, air damping, rapid weighing, agate knife edges. A
brass chain suspended from the beam with its outer end screwed
on a rotating drum on which a scale is graduated from 0-110
divisions, each division representing 1 mg. By the movement of this
scale before a vernier, reading up to 0.1 mg. is taken.