[MENTION=413198]prj71[/MENTION], perhaps you need to look at a shaped beam to see what it's like. If it's sideways or upside down, it's extremely ineffective. And I'm not asking how I can eliminate the mount I already have and works well. I'm asking if such a thing is commercially available because it works so well for what I need. So I think you're underthinking it, i.e. offering a solution to a problem different than the one I have. If I ask you what the weather is and you tell me what time it is, it doesn't matter how precise your time readout is.