THIS planisphere measures 5½ in. by 5 in. and can be carried in the pocket without the slightest inconvenience. It shows how the stars appear for each month on any selected day or hour to an observer ...

Imago Mundi is the only English-language scholarly periodical devoted exclusively to the history of pre-modern maps, mapping, and map-related ideas from anywhere in the world. It was founded in Berlin ...

The small planisphere was my treasure. By turning the top wheel around and aligning the date and time scales on the base and the top, you could see which stars and constellations would be visible in ...

Imago Mundi is the only English-language scholarly periodical devoted exclusively to the history of pre-modern maps, mapping, and map-related ideas from anywhere in the world. It was founded in Berlin ...

This is a hot little quartz watch with a built-in planisphere which shows you the constellations of the northern hemisphere on a glow-in-the-dark face. Not bad for a $50 watch. It even has a rubber ...