A Magic Analysis wand is a device for measuring magic potential. Edward Verres used it to check if Ellen and Elliot awakened[1] after the incident with Bloodgrem in Evil Monkey story line. The wand is loud, but works at a distance and doesn't work like a thermometer (especially not a non-oral one) as Ellen feared.
Measuring Ellen and Elliot[]
The wand not only confirmed Ellen's and Elliot awakening, but also provided some detailed information about their energy buildups, which Edward used to tell how much magic they need to use up periodically.[2] Namely, that Ellen should shoot two blasts every morning, while Elliot should transform once every six hours and sleep transformed.
Measuring Grace[]
The wand doesn't work correctly on Uryuoms and greater chimeras like Grace. Edward didn't actually try it on Grace, but mentioned that it would give a false positive for Grace having awakened.[3]
Measuring Tedd[]
Tedd was scared by the sound which the wand made.[1] As mentioned in the Hair story line, his fear was a conditioned response from hearing it frequently as a baby. The wand reported him as having zero magic potential and his parents found it suspicious and worth investigating,[4] especially Noriko tested him repeatedly in the hope that the result would change, no matter how irrational it sounded.[5]
He was actually frightened enough of the loud and scary wand that his fear of it increased his, already abnormally high, spell resistance (because he is a seer) when he heard it. It was a big enough increase that it caused him to succeed, though unintentionally, in resisting its detection of magic potential to give it a false negative every time it was used on him.[6]
Therefore, Noriko's hope technically wasn't irrational ... if only they tried some less scary wand ...
Destruction[]
Edward may have broken the wand after he learned that Tedd is a seer, though Tedd isn't sure.[7]