Reparation Apparatus

Reparation Apparatus	Level 6
This gauntlet-like contraption enhances your ability repair constructs.
Item Slot: Hands	1800 gp
Property: When you use a healing power on a construct, that creature regains an additional 2d6 hit points. When you use a power to grant temporary hit points to a construct, that creature gains an additional 2d6 temporary hit points. Property: When you use a power that allows a construct to spend a healing surge to regain hit points, that creature regains an additional 2d6 hit points. When you use an encounter power or a daily power to grant temporary hit points to a construct ally, that creature gains an additional 2d6 temporary hit points.

Reparation Apparatus is a magic item introduced in Dragon 365 for the Artificer,

The errata modified the item, having the additional hitpoints apply if the construct spends a healing surge to regain hitpoints, and restricts the temporary hitpoints bonus to those using an encounter or daily power.