The Wenger UniGlobe - A Modern Day Armillary Sphere
The Uniglobe, an armillary sphere, is made with the inner terrestrial globe in close proximity to the external celestial globe, thus allowing easy determination of the geographical location of a celestial object. The UniGlobe was designed in 1973 as a result of the passing of the comet Kahoutec. Interest in knowing where to look in the sky led to its design. Three prototypes were constructed and a manual for using the UniGlobe was written. The Uniglobe has been used to teach celestial navigation classes at Santa Cruz Harbor. It is the ideal tool for teaching the concepts of navigation, especially the use of spherical triangles. After its construction, use of the globe led to the discovery that it could be used as a sundial. From that discovery the Wenger Sundial emerged.
You may read the Manual for the Uniglobe here.
Photos of the Uniglobe.