TY  - BOOK
AU  - Foster,Samuel
AU  - Wingate,Edmund
AU  - Sawyer,Frederick W.
ED  - North American Sundial Society,
TI  - Posthuma Fosteri: the description of a ruler, upon which is inscribed divers scales : and the uses thereof 
T2  - ShawdowCatchers
PY  - 2001///
CY  - [United States]
PB  - North American Sundial Society
KW  - Mathematical instruments
KW  - Early works to 1800
KW  - Mathematics
KW  - Astronomy
KW  - Nautical astronomy
KW  - Navigation
KW  - Instruments
KW  - Nautical instruments
KW  - Dialing
KW  - textbook
KW  - historic
KW  - how-to
KW  - dialling
KW  - scales
KW  - ruler
KW  - proportions
KW  - Sundials
KW  - United Kingdom
N1  - Reproduction of the original in the Yale University Beinecke Rare Book and Manuscript Library; Reprint. Originally published; London : Robert and William Leybourn, 1652
ER  -