Trace

Shining blue lines appear on your arm, the complexity of them are similar to blood veins. They move quickly down your arm & into the object/target you are touching. User will get information about the construction of this object/target.

or

Enhance this object/target's functionality. Roll a d20 + wisdom modifier, effect of the result is deemed by the Dungeon Master. (So what aspects of the item were enhanced or if the item is permanently impair this object's function. 

At Higher Levels. When you cast this spell using a spell slot of 3rd level or higher, get a +2 on your Enhancement roll.