This is part of a herringbone gear wheel.
André Citroën*, the founder of the Citroën motor company bought the patent for the gear and from it devised the double helical gear.
The Citroën logo is attributed to the chevron formation of the herringbone gear wheel.
I made this pic. as an illustration of the logo's supposed derivation and as a photoshop exercise: https://365project.org/dulciknit/on-the-day-extr/2021-10-30
Critique welcome. Veteran 365er, 2011 vintage. Only posting occasionally and irregularly now.
I'm an abstract photography enthusiast but not exclusively so.
Born in the...