Screenbar is a Mac os Menubar application that helps you to set a timer to take screenshots. I recently did a minor update to it.
Update
You can now download Screenbar from the App Store
Settings
The settings popup has been updated with a setting to select save path for your screenshots.
Screenbar v0.2 settings
Icon
The Screenbar icon is nothing fancy at all. Nevertheless the icon has been added in all the different sizes a mac os application needs.
Screenbar v0.2 icon