Kronos Golf staff member, Tara, was recently featured in a magazine article about putting entitled "Back to the Basics". In it she demonstrates how the Metronome can help support a proper setup.
Not only do the milled sight lines on the Metronome help in lining up to your point of aim, but they are also used to help support a key golf fundamental, the setup. Milling sight lines on both the top line and the flange creates an inherent setup aid as demonstrated by Tara.
The eyes down lesson highlights one of the major benefits of the Metronome putter design.