Fyi, a small detail is that the pawl edges are ground at a slight angle to ensure positive locking against the ratchet teeth of the spiral nuts. If the pawls are installed upside down, the angle promotes positive skipping instead. 6:10
I’ve got 2 of these that belonged to my grandfather. They’re great for doing light work where a power drill could cause damage. I collect Zippo lighters and use them to remove flints that get stuck in the flint tubes.
I have one of these in my farm truck box, did this last summer. Now I'll make a 1/4" adaptor as I already made a 1/4" socket adaptor (if your good you can grind one using the old bit as a template)
