Mining compass in engraved ivory case, Italian, 17th century
1601-1700
Circumferentor by J. Sisson of London
1731-1770
Surveyors compass, 1801-1830.
1801-1830
Circumferentor by Fraser
Surveyor's compass
1695-1766
Surveyor's compass, English, 1725-1795
1725-1795
Surveyor's compass
Surveyor's magnetic compass, British, 1710-1750
1710-1750
Circumferentor, Italian, 1686
1686
Surveyor's compass (circumferentor)
1836-1856
Surveyor's compass, British, 1820-1830
1820-1830
Circumferentor, British, 1792-1800
1792-1800
Circumferentor with mahogany case
Italian off-set circumferentor, 1601-1700
1601-1700
Mining compass & clinometer, German, 1901-1907
1901-1907
Transit compass
1840-1842
Circumferentor by Joseph Somalvico & Co., 1839-1899
1839-1899
Circumferentor by J.M. Kleman and Son of Amsterdam
1771-1800
Circumferentor, Dutch, 1701-1800
1701-1800
Circumferentor, in mahogany box
Surveyor's field kit, 1700-1730
1700-1730
Universal instrument, level & circumferentor, French, 1800-1899
1800-1899
Brunton-Pearse mine transit compass
1905
Circumferentor, 1750-1763.
1750-1763
Brunton pocket transit compass with case, British, 1918-1922
1918-1922
Miner's surveying compass, 1845-1855
1845-1855
Brunton pocket transit compass with case, 1925-1930
1925-1930