With these powers should come enormous checks and balances on their use.
For the above reasons spring balances are nbt in general so accurate as knife-edge machines.
In the use of ammeters in which the control is the gravity of a weight, such as the Kelvin ampere balances and other instruments, it should be noted that the scale reading or indication of the instrument will vary with the latitude and with the height of the instrument above the mean sea-level.
In spite of all this complicated machinery of checks and balances, revolution followed upon revolution, nor could an occasional reign of terror be prevented like that of the Signore Gauthier de Brienne, duke of Athens (1342-1343).
Scale-beams are the most accurate balances, and the most generally used.