The Docking Turn Template is designed to be used with Firestorm Armada. The template has hash marks every inch for movement as well as 45 degree turns on both corners. It also features a notch for docking it with the stand 40mm by 40mm base that is used in Firestorm. This allows you to easily and accurately determine firing arcs.
CorSec Engineering have released a turn template for use with Firestom Armada. From their announcement: