A block to accurately measure and display currents passing through it. (It would be a machine, in order to balance both the costs and make coding easier).
It would display 2 different values, EC/s (or frame) and EC/ks (or 1000 frames). This would enable a reliable monitoring of both LV and HV currents. In a circuitry sense it would behave just like a cable (which doesnt care what type of current is put through it). Possible uses include:
-inputs into factories
-outputs of generator fields
-maintenance stations along HV-grid.
craft recipe:
[C][EC][C]
[R][M][R]
[C][ ][C]
C=Cable
EC=EC-manipulator
R=Redstone
M=Machine