Long before cordless power tools, carpenters relied on this hand-powered device to drill holes in wood.
The curved frame gave the user leverage, while the top handle was pressed firmly against the material. Turning the wooden side grip rotated the bit held inside the metal chuck. It worked slowly compared with a modern drill, but offered excellent control and required no electricity.
Many older workshops kept several different bits for jobs of various sizes.
Answer: It is a brace-and-bit hand drill.
