
"The description and use of the Sector, Cross-staff and other Instruments", 2nd edition by Edmund Gunter
1636
1636
1915
1864
1543
1973
1925-1951
1925-1951
1951-1972
1958
1925-1951
1907
1947
1925-1951
1951-1972
1925-1951
1925-1951
1925-1951
1925-1951
1966
1965
1961
1972
1963
1939-1993
1957
1997
1980
1992
2007
2007
2005
1975
1986
2017
1975
1989
1934-1988
1998
1931
1925-1951
1914-1970
1950
2002
1850