تفاصيل

F-4

Hammett's Planisphere

Hammett's Planisphere showing the principal stars visible for every hour in the year from latitude 40 degrees north. The planisphere is is navy blue with gold and white lettering. The device is made of cardboard and leather.

Directions are printed on the back.

leather, cardboard

	Imperial(in)		Metric(cm)
Height
Width	12		30.48
Depth	12		30.48
Diameter
Circumference