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Galvanometer

A needle that swings when current runs through it. It tells you how much current is actually flowing through an electrical block.

Crafting

W W W
N G N

W is Copper Wire, N is an Iron Nugget and G is a Glass Pane.

Using it

  • Right-click any electrical block to read the current on your action bar, e.g. "Galvanometer: 1.00 A". It reads in steps of 0.25 A.
  • On a machine, it shows what the machine is getting next to what it wants, e.g. "0.50 of 1.00 A". That's the quickest way to tell a starved machine from one that's simply weak.
  • Carry it anywhere in your inventory and Jade's tooltip on electrical blocks gains an amps line.

Reading a live cable is free and safe, as long as it's still insulated. Right-clicking bare live cable is a hand on the wire and shocks you. Nothing has to stop while you measure.

What it's good for

  • Finding which cable on a busy line is carrying the most (and so is about to overheat).
  • Checking whether adding another Galvanic Cell actually helped.
  • Working out why a magnet is weak: low amps means not enough supply, while full amps on a weak magnet means the voltage is the problem (long run). Check that with an Electroscope.

See also