Jury Rigging

"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."

- Explanation of perk from Vault-Tec

 is a perk in Fallout: New Vegas.

Effects
The perk, available at level 14 or higher, 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.

There are 13 categories of weapons that the perk will enable repairing within; unarmed, one-handed melee (blunt), one-handed melee (blade), Two-handed melee, energy pistols, energy rifles (laser), energy rifles (other), energy weapons (heavy), one-handed guns, two-handed automatic guns, bolt/lever-action guns, heavy guns, and launchers. Likewise, clothing can be used to repair each other within their category (light, medium, heavy). Headgear are even less restricted; entire headgear - including apparels like eyeglasses - can be used to repair each other.

Weapons are categorized, to some extent, by the method in which they fired. For example, an anti-materiel rifle can not be repaired by a Sniper Rifle, because the sniper rifle is not manually re-chambered. The anti-materiel rifle CAN be fixed by weapons such as the hunting rifle, since they fire in the same way. Some discrepancies arise with some other weapons though. The 12.7mm SMG is categorized as a two-handed gun, and therefore can not be repaired by the 9mm and 10mm SMGs, since they are one-handed guns. A (somewhat) complete list of all weapons that fall into specific categories follows.

Repair Categories
Each weapon and armor falls under a specific category in which all weapons/armors repair each other. If you find a weapon outside of (or not included in) a category here, feel free to fix/add it.

Unarmed
Boxing Tape; Boxing Gloves; Dog Tag Fist; Bladed Gauntlet; Mantis Gauntlet; Brass Knuckles; Love and Hate; Power Fist; Zap Glove; Displacer Glove; Ballistic Fist.

One-handed Melee (Blunt)
Police Baton; Lead Pipe; Ripper; Dress Cane; Tire Iron.

One-handed Melee (Blade)
Straight Razor; Switchblade; Knife; Hatchet; Combat Knife; Machete; Cleaver; Machete Gladius; Ripper; Shishkebab.

Two-handed Melee
Baseball Bat; Shovel; 9-iron; Rebar Club; Sledgehammer; Super Sledge; Bumper Sword; Chainsaw; Thermic Lance; Pool Cue.

Energy Pistols
Laser Pistol; Plasma Pistol; Plasma Defender; Recharger Pistol; Pulse Gun; Alien Blaster.

Energy Rifles (Laser)
Laser Rifle; Tri-beam Laser Rifle. Recharger Rifles can be repaired by Laser Rifles, but not the other way around.

Energy Rifles (Other)
Plasma Rifle; Laser RCW; Multiplas Rifle; Recharger Rifle; Gauss Rifle.

Energy Weapons (Heavy)
Plasma Caster; Incinerator; Heavy Incinerator; Flamer; Gatling Laser.

One-handed Guns
That Gun; 9mm Pistol; 9mm SMG; 10mm Pistol; 10mm SMG; .357 Magnum Revolver; .44 Magnum Revolver; Silenced .22 Pistol; Sawed-off Shotgun; 12.7mm Pistol; Detonator.

Two-handed Automatic Guns
Service Rifle; Assault Carbine; Marksman Carbine; Sniper Rifle; Riot Shotgun; Silenced .22 SMG; Light Machine Gun; 12.7mm SMG.

Bolt/Lever-action Guns
BB Gun; Varmint Rifle; Single Shotgun; Cowboy Repeater; Caravan Shotgun; Hunting Rifle; Lever-action Shotgun; Trail Carbine; Hunting Shotgun; Brush Gun; Anti-materiel rifle; This Machine.

Heavy Guns
Minigun.

Launchers
Grenade Rifle; Grenade Launcher; Grenade Machinegun; Missile Launcher; Fat Man.

Heavy Armor
All heavy armors. T-51b Power Armor, Metal Armor, etc.

Medium Armor
All medium armors. Combat Armor, NCR Ranger Combat Armor, etc.

Light Armor
All light armors. Leather Armor; Wasteland Outfit; etc.

Headgear
All head items. T-51b Helmet, Sunglasses, etc.