Ferguson's Orrery
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Paradox solution 
Ferguson's Orrery 
Paradox text 
Article 1 
Article 2 
Article 3 



Select Mechanical Exercises, by James Ferguson, 1773.

The pictures below show a copy of James Ferguson's mechanical paradox orrery that I made for exhibition at the BHI 150th anniversary exhibition.

The construction of it was described in a series of articles in the Horological Journal, written with Jim Donelly, who had also made copies using CNC machining techniques.

The articles can be found here:

Orrery Articles: PART 1.  PART 2.  PART 3.

Click here for Ferguson's original text for this model.

or here for a Description



CLICK for a PDF Slideshow.



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