Signature of <a href="https://en.wikipedia.org/wiki/Clemens_Herschel" class="extiw" title="w:Clemens Herschel">Clemens Herschel</a>, <a href="https://en.wikipedia.org/wiki/hydraulic_engineer" class="extiw" title="w:hydraulic engineer">hydraulic engineer</a>, president of the <a href="https://en.wikipedia.org/wiki/American_Society_of_Civil_Engineers" class="extiw" title="w:American Society of Civil Engineers">American Society of Civil Engineers</a>, inventor of the <a href="https://en.wikipedia.org/wiki/Venturi_meter" class="extiw" title="w:Venturi meter">Venturi meter</a>
<a href="https://en.wikipedia.org/wiki/Clemens_Herschel" class="extiw" title="w:Clemens Herschel">Clemens Herschel</a>
Kent, Walter G. (1927). <i>An Appreciation of Two Great Works in Hydraulics, Giovanni Battista Venturi, born 1746, Clemens Herschel, born 1842.</i> London:Blades, East &amp; Blades.