A Modified Form of Electrical Control for Driving Clocks; A New Form of Right Ascension Slow Motion for Equatorial Telescopes. Contained in The Scientific Proceedings of the Royal Dublin Society, Volume 11, Issue 4, 5 pages 33-36; 37-38. Book PDF, ePub eBook

Sir Howard Grubb
A Modified Form of Electrical Control for Driving Clocks; A New Form of Right Ascension Slow Motion for Equatorial Telescopes. Contained in The Scientific Proceedings of the Royal Dublin Society, Volume 11, Issue 4, 5 pages 33-36; 37-38.

A Modified Form of Electrical Control for Driving Clocks; A New Form of Right Ascension Slow Motion for Equatorial Telescopes. Contained in The Scientific Proceedings of the Royal Dublin Society, Volume 11, Issue 4, 5 pages 33-36; 37-38..pdf

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