Here is a quick clip of the tilt in motion. This video shows a standard SPG5485A-CM with a 180° rotation modification and 5:1 gear ratio.
http://www.youtube.com/watch?v=F0q5ASKgk7k If you want to attach this tilt to a pan gearbox to create a complete pan/tilt system, we suggest using a SPG400A-CM-360 gearbox for the base pan. This is the same as the tilt gearbox, but instead of the standard rotation modified to 180º, you would select the 360 degree version, (you choose the servo and ratio).
Here is a quick clip of the pan AND tilt system in motion. Notice the top gearbox rotates 180 degrees, while the base gearbox rotates 360°.