Astronomical quadrant with stand, 1685-1724
1685-1724
Folding rule
1680-1699
Universal equinoctial ring sundial, astronomical ring dial
1628-1724
Sector by Butterfield
1680-1724
Pocket sun dial with folding gnomon and case
1678-1724
Silver sector
1740-1760
Brass sector, by Butterfield
Semicircular protractor
Gunner's level
Horizontal Butterfield-type sundial, in shagreen covered case
1678-1724
Microscope of the Leeuwenhoek type
Sundial
1700-1725