Coil spanner
A coil spanner was an engineering tool with various uses. One variant of this technology was the interphasic coil spanner. ()

On  in 2154, Lorian used a coil spanner to make adjustments to a plasma injector. ()

In 2372, Lon Suder murdered fellow  crewman Frank Darwin by striking him in the back of the head with a two-kilo coil spanner. ()

Chief O'Brien asked Worf to give him the coil spanner when he repaired a console in Ops. ()

On a salvage mission to Empok Nor in 2373, Boq'ta asked Amaro to retrieve a coil spanner so he could loosen a bolt. Amaro returned with a flux coupler instead, to find Boq'ta killed by a Cardassian soldier. ()

In 2375, Ezri Dax used a coil spanner to tune a phase amplifier on AR-558. ()

de:Spulenschlüssel
Engineering tools