This is the VERY FIRST ACA Hurricane 130 on sketchup. The ACA Hurricane 130 MK-I was a prototype of the well known ACA Hurricane 130 MK-II.
The MK-I was desined with a square horn. 5 where built then they where discontinued and the MK-II was introduced. The MK-II had a round horn because it was supposedly eaiser and cheaper to make. #ACA #ACA_Siren #Air_raid #Civil_Defence #Hurricane_130 #Siren
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