I have been collecting tools from my grandfather's old workshop. One of the items appears to be a hand drill. What is odd about this is that if you look up hand drill they either function similar to a manual egg beater or a brace-and-bit hand-drill. Closest I found was the icon for hand drills on eBay.
This would operate with one hand which is superior to the aforementioned hand drills but for pure drilling I would think the others perform more efficiently. What is this really for and could I use this in modern wood-working?
Update
After reading some of the responses and comments I looked back at the tool with more information. I noticed the top unscrews and it contained 3 small "pins". The picture is enlarged. The objects are about 1 inch long.
The jaws are perfectly sized for for these pins. It appears I had guessed, wrong potentially, that this was a drill.