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Function Gyro (tool belt skill)

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Disambig icon.png This article is about the tool belt skill. For the trait, see Function Gyro.

Function Gyro (tool belt skill).png

Function Gyro

Engineer icon small.png Engineer (skill list)
Scrapper icon small.png Scrapper
Profession mechanic
Weapon slot empty tango.pngWeapon slot empty tango.pngWeapon slot empty tango.pngWeapon slot empty tango.pngWeapon slot filled tango.png
Tool belt
Game link

56920, 56921
25 Recharge time  
Function Gyro

Create a lightning field at the specified point. Then summon gyros to finish foes and revive allies within the field. The recharge of this skill is increased for each gyro created beyond the first.
Interrupted gyros are destroyed.

Radius.png Recharge increase per gyro: 50%
Damage.png Damage: 266 (1.0)?
Damage.png Damage: 133 (0.5)?
Number of targets.png Number of Targets: 3
Number of targets.png Number of Allied Targets: 3
Duration.png Field Duration: 5 seconds
Radius.png Radius: 240
Combo.png Combo Field: Lightning
Range.png Range: 600

— In-game description

A Function Gyro and a Medic Gyro.

Related traits[edit]

Inventions Inventions

Tools Tools

Scrapper Scrapper

Combat abilities of the summoned gyro[edit]

  • Revives allies or finishes off foes on your behalf.

Glob of Goo.png Fuel Remaining


  • This skill summons up to 6 gyros to revive up to 3 downed allies and finish up to 3 downed foes in the targeted area. If no downed ally or foe is found in the targeted area, no gyro will be summoned, but the skill will still be cast, creating the lighting field, and triggering any related trait in use.
    • Each gyro created beyond the first is one summon and is independent of the others. If the scrapper summons 2 gyros and one of them is destroyed, the other won't necessarily get destroyed.
  • Like all revives and all finishers, the gyro can only revive downed allies, not dead ones. Unlike most revive skills, this skill cannot be used to revive fully dead NPCs.
  • The summoned gyro has a limited life span of roughly 10 seconds, indicated by the Glob of Goo.png Fuel Remaining effect.
    • The gyro will be destroyed prematurely if:
      • Its target revives or fully dies.
      • Is affected by crowd control and does not have Stability.png Stability to negate it.
      • Damage depletes its health.
  • Gyros use the same finisher skin as the scrapper that summons them.
  • No gyro will be summoned if it is the damage of this skill that puts the enemy in downed state.
  • When this skill is ready, a small orange gyro hovers around the Engineer.
  • When the Gyroscopic Acceleration trait is used, this skill provides superspeed to 5 allied players from the trait despite the fact its tooltip doesn't reflect this. The effects of function gyro itself are still limited by its 3 allied and 3 enemy target cap.
Oftentimes, a gyro may fail to be destroyed after reviving an ally or finishing a foe, potentially following its target around for its full fuel duration. If the target falls again into downed state, the gyro will not attempt to revive/finish them again.

Version history[edit]

For a detailed skill history, see here.

Patch Changes
April 18, 2023
  • Reduced power coefficient from 1.0 to 0.5 in PvP only.
March 30, 2022
  • Fixed a bug in which this skill would grant more superspeed than intended with Gyroscopic Acceleration in WvW.
October 01, 2019
  • Increased damage by 100%. Increased land radius to 240 and underwater radius to 360. Added clarification to skill description to clarify that function gyros are destroyed when their skill is interrupted. Reduced recharge from 30 seconds to 25 seconds.
July 16, 2019