... frame,thick film resistor,contact spring,plastic holder, spring steel balance, float, lead wire ,screw etc. Main parts raw ... Cd/stainless steel/Cupronickel Surface treatmentzinc plating/passivation are available Accuracy of level ±2mm Resistance Tol.±1%Ω Wear-resistant lifeDepends ... on the material of contact spring and Pd content Standard:2,00,0000times ...