A trumpet mouthpiece. Depicted model is a <a href="https://en.wikipedia.org/wiki/Vincent_Bach_Corporation" class="extiw" title="en:Vincent Bach Corporation">Vincent Bach</a> 1½C. Vue technique disposée suivant la norme de projection française.
<table class="toccolours" style="width:100%; margin-top:10px;" cellpadding="2"><tbody><tr class="plainlinks"><td>This photo was taken by <a href="//commons.wikimedia.org/wiki/User:Eusebius" title="User:Eusebius">Eusebius</a> (Guillaume Piolle).<br>Feel free to reuse it, but always credit me as the author as specified below.
</td></tr></tbody></table>
CC BY 3.0
own work, based on <a href="//commons.wikimedia.org/wiki/File:Embouchure_profil.jpg" title="File:Embouchure profil.jpg">File:Embouchure profil.jpg</a>, <a href="//commons.wikimedia.org/wiki/File:Embouchure_-_avant.jpg" title="File:Embouchure - avant.jpg">File:Embouchure - avant.jpg</a> and <a href="//commons.wikimedia.org/wiki/File:Embouchure_-_arri%C3%A8re.jpg" title="File:Embouchure - arrière.jpg">File:Embouchure - arrière.jpg</a>. Projection symbol extracted from <a href="//commons.wikimedia.org/wiki/File:Convention_placement_vues_dessin_technique.svg" title="File:Convention placement vues dessin technique.svg">File:Convention placement vues dessin technique.svg</a>