Archived from: http://bhs.broo.k12.wv.us/homepage/alumni/dstevick/lampert/Brunn21.htm

Smooth and easy movement was attained with two such arrangements of 30mm (1-1/4")
ball bearings and one furniture roller for azimuth rotation.

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Author: Guntram Lampert and David Stevick
[Weird Telescopes Page] [Brunn 6-inch Story]

Curator: Hartmut Frommert [contact]
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