Surveyor's cross head
1900-1929
Cross-head, 1795-1805
1795-1805
Cross-head, 1690-1710
1690-1710
Adjustable crosshead, French, 1801-1830
1801-1830
Head for Cross-staff head with telescope, 1880-1899
1880-1899
Cross-staff head with telescope
1880-1899