The SLV-3 became India´s first successful launch vehicle when it placed the Rohini satellite into orbit in 1980. The project was headed by later Indian President Dr. APJ Abdul Kalam.
Despite its high rate of failiure a modified first stage of the rocket was used to launch India´s HEX-1 Reusable Launch Vehicle Technology Demonstrator in 2016.
It was also modified into the ASLV.
The SLV is one of the easiest models on this website. If you leave the small details away it only consists out of two cylinders, three cones and the fins.
The scale of the paper model is 1:100.