Proportional compass
1600-1699
Proportional compasses: 6-inch
1828-1838
Proportional compasses with lineal ratio scale
1900-1920
Proportional compass:- Meeting point pattern
1876
Proportional compasses in case
Proportional compasses by Dollond
Proportional compass
1843-1844
Proportional compasses
Proportional compass
1876
Proportional compass:- Old English
1876
Proportional compasses by Charles Smith
1917
Proportional compasses
1720-1753
'Whole and Halves' proportional compass by William Ford Stanley
1876
Proportional compass made by W. F. Stanley
1876
Proportional compass by Joseph Jackson
1735-1760
Two proportional compasses in case
Pair of proportional compasses, brass c. 1680
1678-1682
Proportional compass with turn down points
1876