
"The description and use of the Sector, Cross-staff and other Instruments", 2nd edition by Edmund Gunter
1636
1636
1915
1864
1543
1973
1956
1752
1888
1996
2007
2014
1992
2013
1963
1866
1963
1971
1962
1939
1939-1993
1965
1958
1925-1951
1951-1974
1939-1993
1939-1993
1939-1993
1951-1974
1951-1974
1951
1976
2001
2001
1994
1964
1951-1974
1914-1970
1951-1974
1945-1970
1914-1970
1914-1970
1977
1961
1920-1993
1914-1970