I.K. Pour, D.J. Krajnovich, et al.
SPIE Optical Materials for High Average Power Lasers 1992
Three metal carbide spheres located approximately equidistant on a support with a V-shaped circular groove allow easy horizontal rotation of a heavy mass in UHV via a turntable residing on the three spheres with vertical axis in the center of the support. © 1984, American Vacuum Society. All rights reserved.