This documentation was done by Palash Vaswani, Design Associate, IDC, IIT Bombay.
You can get in touch with him at palsonline[at]gmail.com
You can write to the following address regarding suggestions and clarifications:
Devnath Bahadur and Parmu Ram Pandey
Village Edka, Dist. Narayanpur,
Mobile: 09479944599, 9406412137
Industrial Design Centre
Mumbai 4000 076