
Sundials and their Construction
Part IX--The Principle and Construction of the Armillary Sphere

Sundials and their Construction
Part IX--The Principle and Construction of the Armillary Sphere

Sundials and Their Construction
Part VIII--Lines of Declination for Dials in Planes Parallel to the Earth's Axis

Sundials and their Construction
Part VII--Lines of Declination on Different Types of Dials

Sundials and their Construction--VI
Lines of Declination; Signs of the Zodiac

Sundials and Their Construction--V
Materials for Construction; Calculating Time

Sundials and their Construction--IV
Declining and Reclining Dials

Sundials And Their Construction—III
The Construction of North, East, and West-Facing Dials, and Polar Dials

Sundials and their Construction--II
Determining a Meridian Line and the Declination of a Plane. Construction of the South Vertical Type of Dial

Sundials and their Construction—I
Planning Simple Equatorial and Horizontal Dials