mmmmmmmmmmmmmmm
...where did you get this.....
RaaArtyGunner ? The fact that it also displays MK68 [director]....confirms that it is a rotary locking switch for monitoring functions within the FCS [fire control system] of an OZ owned Charles F Adams DDG class destroyer, but localised to the Australian designed Ikara ASW & sonar ASW
ie., HMAS Hobart, Perth or Brisbane ....the only other world navy to purchase the IKKY bird [Ikara] was from memory Brazil
There is no reference to the DDG's 5"/54 calliber FMC gun mounts nor the FMC GMLS MK13 [guided missle launcher system]
Even though the twin [port & stdb] Ikara launchers were mounted on deck level just fwd of boiler2 funnel....they were technically the responsibility of the underwater people ...where
clealy I was above water