Acknowledgments

Except for the images and videos listed below, all drawings, photos and videos were produced by the author.

• Figure of the oldest dial known c. 1500 B.C. - Mayall, page 3.

• Photo of the sundial in Hankey - Mr. Freek Kok (photo by Prof. J. Brink)

• Photo of the sundial in Jaipur - www.atco-r.com/cadrans/sundials.htm
• Fig. 1 and Fig. 2 on the Analemmatic Sundials page - www.harrietjames.sundials.co.uk/
• Fig. 3 - Digital sundial and the video of the digital sundial -
  www.digitalsundial.com
• Fig. 4 - Ivory diptych - www.stedmunds.co.uk/lifestyle/manor/port-sun.html
• Photo of vertical dial in Groningen - home.iae.nl/users/ferdv/fotos.htm
• Photo of the moon dial in Cambridge. - Mayall, page 43.
• The paper model of a polar dial for Pretoria from Dr. Freek Kok, modified by Mr. Walter Meyer, both from the Physic's department of the University of Pretoria.
• Drawing on the introductory page of the glossery - www.mhs.ox.ac.uk/students/98to99/Inst/Instpgs/2.dials.html