# Great Trigonometric Survey

> 19th-century survey to measure the Indian subcontinent

**Wikidata**: [Q1548493](https://www.wikidata.org/wiki/Q1548493)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Great_Trigonometrical_Survey)  
**Source**: https://4ort.xyz/entity/great-trigonometric-survey


## References

1. Freebase Data Dumps. 2013