| http://www.w3.org/ns/prov#value | - Bellows 206 may be constructed from materials other than welded steel and may allow stage 200 more or less than 1 inch of vertical motion.FIGS. 7, 8, 9, and 10 are perspective, top, cut-away front and cut-away side views, respectively, of a polar coordinate stage 300, in accordance with another embodiment of the present invention.
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