[Pramāṇa](https://indike.org/pramana/) › [Studies](https://indike.org/pramana/ins) › [Science, technology and education](https://indike.org/pramana/ins.science) › [Indian Science and Technology in the Eighteenth Century: Some Contemporary European Accounts](https://indike.org/pramana/ins.science.dharampal-1971) › c8.7 # Indian Science and Technology in the Eighteenth Century: Some Contemporary European Accounts c8.7 Indian Science and Technology in the Eighteenth Century: Some Contemporary European Accounts c8.7 - **Language:** English ### [c8.7](https://indike.org/pramana/ins.science.dharampal-1971.c8.7) The use of the instrument, \*Figure I, D\*, I was at a loss to account for. It consists of two circular walls; the outer of which is about forty feet diameter, and eight feet high; the wall within about half that height, and appears intended for a place to stand on to observe the divisions on the upper circle of the outer wall, rather than for any other purpose; and yet both circles are divided into 360 degrees, each degree being sub-divided into twenty lesser divisions, the same as the quadrants. There is a doorway to pass into the inner circle, and a pillar in the center, of the same height with the lower circle, having a hole in it, being the center of both circles, and seems to be a socket for an iron rod to be placed perpendicular into it. The divisions on these, as well as all the other instruments, will bear a nice examination with a pair of compass. - [Previous: c8.6](https://indike.org/pramana/ins.science.dharampal-1971.c8.6) - [Next: c8.8](https://indike.org/pramana/ins.science.dharampal-1971.c8.8) - [Up: c8](https://indike.org/pramana/ins.science.dharampal-1971.c8) --- Source: [https://indike.org/pramana/ins.science.dharampal-1971.c8.7](https://indike.org/pramana/ins.science.dharampal-1971.c8.7) · Pramāṇa