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Q: Product Search: Leveling Stage? ( No Answer,   1 Comment )
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 Subject: Product Search: Leveling Stage? Category: Science > Instruments and Methods Asked by: sgeist-ga List Price: \$8.00 Posted: 20 Sep 2005 11:11 PDT Expires: 20 Oct 2005 11:11 PDT Question ID: 570173
 ```I am trying to find a stage that can be positioned along any planar axis of rotaion through its center. Like a plate riding on top of a hemisphere. The stage needs to be controllable though, either with micrometers or some other method. It can also be controlled through servos or some other electro-mechanical means. The stage needs to be at least 3" square (or diameter) and no larger than 4" square (or diameter). Thanks for your help``` Clarification of Question by sgeist-ga on 20 Sep 2005 11:18 PDT ```Sorry, I forgot to mention, the axes of rotation need to be on a plane offset from the surface of the stage and through its center. So back to the stage on a hemisphere analogy, if you attach a stick through the sphere side through its radius and rest the hemisphere on a ring, then when you move the stick you'll be rotating the stage through an axis that is offset from the stage by a distance equal to the radius of the hemisphere you used. Again, the stage doesn't need to work this way, it just needs to accomplish the same thing. Thanks!```
 ```Let's confirm: You need to rotate your sample - the thing you want to position with your stage - about 2 mutually perpendicular axes. The axes of rotation intersect. The sample will be a distance D from the intersection of these axes. Over what range of the 2 angles do the sample need to rotate? Do you need to measure the angles? What is the smallest change you need to make in each of the angles? What does the sample weigh?```