Adjust a camera to Exactly the pan, tilt, and roll positions you need and then lock it down so it simply will not move!
The Foveal 3-Axis Rigid Camera Mount for small-to-medium sized "box" cameras features:
3-Axis Adjustment: pan, tilt and roll.
Fine Adjustment of all 3 axes.
Individual axis lock down makes adjustment easier, more precise, and prevents accidental change. Heavy-duty construction.
http://FovealMounts.com/InfoComm
Is this overkill for your application? See our Fine Adjustment Mounts: www.FovealMounts.com