The "rocket ramps" for the Saab B 18B (the T 18B used the same wing mounts). This the english version to this pic: File:Saab b 18b raketeupphängning.png
<a href="//commons.wikimedia.org/wiki/User:Blockhaj" title="User:Blockhaj">Blockhaj</a>
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<span class="int-own-work" lang="en">Own work</span>