What was the first mouse in the world made of?

1. The first mouse in the world was made of wood, and the earliest patent name was "X-Y position indicator of display system".

From 65438 to 0964, douglas engelbart, who worked in Stanford Research Institute, made the first mouse in the world.

This mouse is made of wood. It looks like a wooden box with two rollers at the bottom and only one button at the top.