Surveyors General in the  Presidencies 1767-1815
A. Bengal
1767-1777 James Rennell
1777-1786 Thomas Call
1786-1788 Mark Wood
!788-1794 Alexander Kyd
1794-1808 Robert Colebrooke
1808-1813 John Garstin
1813-1815 Charles Crawford.

B. Bombay
1796-1807 Charles Reynolds
1807-1815 Monier Williams

C. Madras
1810-1815 Colin Mackenzie

Surveyors General of India 1815->
1815-1821 Colin Mackenzie
1821-1823 John Hodson
1823-1826 Valentine Blacker
1826-1829 John Hodgson
1829-1830 Henry Walpole
1830-1843 George Everest
1843-1861 A. S. Waugh
1861-1877 H. L. Thuiller
1878-1884 J. T. Walker

Superintendents of Trigonometrical Survey 1800->
1800-1823 William Lambton
1823-1843 George Everest
1843-1861 A. S. Waugh
1861-1884 J. T. Walker