The 18th Century stylus has a sharp pointed lower end made of steel. The writing must be scratched into the surface of a palm leaf using this sharp stylus. The top part, called the Chatra (umbrella), resembles the Talipat leaf when used as an umbrella. The patra (leaf) is the part like a lead and is generally decorated, the nala (pipe) is a tube-like part, ribbed, and the ganda (knob) is always a smooth, round part.
You can find different types of styli in the Casey Wood collection or in the Kandy National Museum in Sri Lanka.