This <a href="https://en.wikipedia.org/wiki/Teclu_burner" class="extiw" title="w:Teclu burner">Teclu burner</a> has HELTO cast in base. Burner has a cast iron base and the tube is made off chrome plate brass.
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/woodhead/">jasonwoodhead23</a>
CC BY 2.0
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