Compensation of dial-balance errors contributed by loose weights

Conclusions

• 1. The error of dial balances with loose weights, which increases in each range with a rising load, is due to the displacement of the apex of their loose weights lever's end knife edge from the line running through the apexes of the bearing and the load-carrying knife edges.

• 2. These errors are eliminated by adjusting the height of the loose-weights lever's end knife edge.

• 3. Investigations of the relationship (2) shows that for the same vertical displacement of the end knife edge the error increases with a rising tare effort P₀ and mass P of loose weights, and a rising maximum tilt angleϕ _max of the loose-weights lever.

• 4. The error due to the lack of coincidence between the lever's center of gravity and the rotation axis should be compensated by changing the position of this center of gravity with respect to its height.