Ilmatorjuntamuseo -- Ilmatorjuntamuseo_tulenjohtotutka_ja_tykki.jpg

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The radar and cannon that saved Helsinki from the bombardment in February 1944. The fire control radar m/39 on the left is called "Irja". Finland had purchased six such radars from Germany the year before. On the right is the heavy anti-aircraft cannon 88 ltk/37 RMB.
Photo: Sakari Kiuru