Title
Instrument for timekeeping and direction
Caption
Instruments for timekeeping and direction finding in the Islamic world / based on shadow and twilight phenomena depending on the position of the sun.
Date
Feb 10, 2011
Credit line
Photo12/Ann Ronan Picture Library
Reference
ARP11A03_434
License type
Rights managed
Available size
50,2Mb (2,0Mb) / 15,9in x 12,3in / 4777 x 3675 (300dpi)