1. IOR/X/12154
- Reference (shelfmark):
- IOR/X/12154
- Title:
- Levelling of Precision in India, Heights of Bench-Marks
- Scope & Content:
- A series of 72 pamphlets containing tables of bench-marks and their indexes of geographical names, for blocks in the India and Adjacent Countries grid. Each booklet covers one 1:1,000,000 block, and contains a 'Chart showing the Main and Branch Lines of Levelling and the sites of the several Tid...
- Collection Area:
- Map Collections
- Languages:
- English
- Date Range:
- 1911-1941
- Extent:
- 72 pamphlets