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. I designed the UniGlobe in 1973 as a result of the passing of the comet Kahoutec. My interest in knowing where to look in the sky for the comet led to its design. Three prototypes were constructed and a manual of instruction for using the UniGlobe was written. I used the Uniglobe to teach celestial navigation classes at Santa Cruz Harbor. It is an ideal tool for teaching the concepts of navigation, especially the use of spherical triangles. After its construction, use of the globe led to my understanding that it could become a sundial. From that discovery the Wenger Sundial emerged.
You may read the Manual for the Uniglobe here.
Photos of the Uniglobe.