Wow! One of the many interesting out-of-copyright scientific illustrations and pre-1922 images on http://vintageprintable.com/wordpress/. Via PaPaYa!
I really can't believe it's only a sketch... http://tattoo-ideas.us
bird in flight
Full Moon Poster Geometric Art Galaxy Sky Space Stars by Fybur
Black White Sundial Compass Tattoo - Remis tattoo #tattoo #art
clockworks tattoos | Sundial & clock tattoo done by Niki Norberg .
I’m A Tattoo Artist From Latvia | Bored Panda
Libra, the Scales
40 Awesome Compass Tattoo Designs | Cuded