Chromatic circle comparing the beta scale's approximations with the just minor third (6:5), major third (5:4), and perfect fifth (3:2), with the harmonic seventh (7:4) marked.
<a href="//commons.wikimedia.org/wiki/User:Hyacinth" title="User:Hyacinth">Hyacinth</a>
<span class="int-own-work" lang="en">Own work</span>