The linked video shows what I've done so far using some html techniques. The actual movement of the 'slides' is very smooth compared to how it looks in the video. It's not much but it's all I can offer back to subsim at the moment. I've had this sitting on desktop and just alt-tab out to use it then alt-tab back into SH4. It works fine. The problem is that the images used have been taken from a distance and at a slight angle which throws off the graduations and lining them up thereby affecting the overall accuracy of the digital tool. If Gino can get a clear scan of the device and provide images then this will be a done deal and I'll make it available for all. Having said that, I'm not sure if the graduations on the actual scope are realistic in that they can be used with the omnimeter. I've used this rough version and what the omnimeter was giving me was close to what I saw in the scope graduations but not perfect.
http://smg.photobucket.com/albums/v6...=omnimeter.mp4