Seasonal changes, the positions of sunrise and sunset and the special circumstances of solstices and equinoxes are easily demonstrated and examined.

• Tiled 6" globe
• Guilt calendar protractor
• Smoked acrylic box housing
• Mechanical simulation of solar illumination of the earth

A smoked acrylic box serves as the physical terminator in this mechanical simulation of the solar illumination of the earth. At the proper tilt and with the calendar protractor built in, it is easy to set the hourly situation throughout the year.