Thaumometer (Thaumcraft 4)

The Thaumometer is a tool added by Thaumcraft 4. It is used to see Aura Nodes and scan blocks, items, and mobs. To scan, hold down the right-mouse button and a text message will appear at the bottom-right of the screen which will note which aspect research points have been earned. If the player attempts to scan a block or item with an aspect that has not been discovered due to one of its constituent aspects remaining undiscovered, a message will appear hinting at the missing constituent aspect. Once scanned, it will show the aspect(s) that the block/item/mob is made of. It will also display the name of the block, item, mob that it is pointing at.