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Published online by Cambridge University Press: 06 March 2019
A single-crystal orienter for the Philips -wide-range goniometer is described. The orienter has a large (3.562 in.) carriage radius for convenient access. The carriage rides on twin V-ways ground accurate to ±0.0002 in. Carriage settings arid spindje settings can be made to 1′. The spindle mounts a standard goniometer head and translates to center the head arcs. An accessory collimator, beam trap, and scatter tube are described.