Items per page
The Fibonacci Sequence (also known as the Golden Spiral) with basic formulas for each. Illustrated in a sketch style.
A modern pad style computer tablet isolated in both the portrait and landscape position with reflections Stock Photo
Set of 12 gun sight crosshairs in four different versions for a total of 48 different crosshairs. Positive, negative, night vision, and color versions.
All rights reserved. © 08/30/2016 123RF Limited 2005-2016.