| FtMacArthur34 | This is the firing coordinate device used to transmit (via mechanical linkage) aiming numbers from the fire control center to the gun crew. The next photo shows how this system worked. |
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| FtMacArthur34 | This is the firing coordinate device used to transmit (via mechanical linkage) aiming numbers from the fire control center to the gun crew. The next photo shows how this system worked. |
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