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.

So far, there are at least 10 categories of weapons that the perk will enable repairing each other within category; Unarmed, One handed melee, Two handed melee, small inexpensive guns, high-end guns, energy weapons, heavy weapons, explosive throwers. 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.

Guns are not strictly categorized by similarity, but by price. For example, a 12.7mm sub-machine gun cannot be repaired by other sub-machine guns, but by sniper rifles, automatic weapons and carbines. A short list of items that can be repaired with other, similar items, includes, but is not limited to:

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; brass knuckles; spiked knuckles; Mantis gauntlet; power fist; Zap glove; Displacer glove; Ballistic fist

One handed melee
police baton; straight razor; switchblade; knife; lead pipe; hatchet; combat knife; Machete; cleaver; Machete gladius; Ripper.

Two handed melee
baseball Bat; shovel; 9-iron; rebar club; sledge hammer; super sledge; Bumper sword; chainsaw

Energy Weapons (Rifles)
laser rifle; plasma rifle; Laser RCW; Multiplas rifle; Recharger rifle; gauss rifle

Energy Weapons (Pistols)
laser pistol; plasma pistol; Plasma Defender; Recharger pistol; alien blaster

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.

Two handed 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-material rifle.

Heavy Guns
Minigun

Launchers
Grenade rifle; grenade launcher; Grenade machinegun; missile launcher; Fat Man.

Heavy armor
Power armor; Metal armor;

Medium armor
Combat armor;

Light armor
Leather armor;

Headgear
(T-51b Helmet, ect.) - Glasses (Headwear)