Definitely a small drill, but looks like it was either custom made, or adapted, or both!
Probably spent most of it's life in a factory doing just one job!
Can't see the make, but I'm guessing British made. The motor looks like a 240v Crompton and the chuck an old Jacobs.
I've seen similar drills before, and if you can use them they are often good value, if not very versatile!