Jury Rigging

 is a perk in Fallout: New Vegas.

Effects
You possess the amazing ability to repair any item using a roughly similar item. Fix a trail carbine with a hunting rifle, a plasma defender with a laser pistol, or even power armor with metal armor. How does it work? Nobody knows…except you.

Allows you to repair items based on category, instead of type. Medium armor can be repaired with medium armor, heavy pistols with other heavy pistols, single hand melee with other single hand melee. Examples: power armor (heavy) can be repaired by metal armor (also heavy), just like mk2 reinforced combat armor (worth more than 10000) can be repaired by ncr basic armor because they are both medium armors. Also, semi-automatic weapons (for example, a Sniper Rifle) can be repaired with any other semi or fully automatic weapons. Meaning one can repair Sniper Rifles with things like an LMG, or Assault Carbine. Same goes for pistols. A Ranger Sequoia can be repaired by the very common .357 Revolvers or even the 10mm and 9mm pistols.

This is an excellent perk for any kind of player build, since not only does it make repairing any equipment much easier, it also makes it easy to repair expensive equipment that is in bad condition to be sold. One could walk into a store, buy an item that is in bad condition but sells for lots of caps when in good condition, and scavenge cheap equipment to repair it. This makes it a VERY lucrative perk.