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."

The perk basically allows you to repair items based on category, instead of type. For example, you can repair the rare Ranger Sequoia with the common .357 magnum revolver. Same goes for armor and clothing as well. Essentially, this perk is very useful by allowing you to use more common items to repair other, more uncommon items.

Many consider the greatest asset of this perk to be the ability to repair and maintain rare and hard to obtain items using simple mundane ones. Ranger Veteran Armor can be repaired using any NCR armor, and guns that use similar ammunition types can repair each other (such as the Assault Carbine and the Light Machine Gun). However some weapons can be repaired beyond just their own gun and ammo type, hunting rifles for instance, can be used to repair lever-action and hunting shotguns.