Other Sources: An idea for a gnome weapon

This is a king DICK adjustable calipers/shifter. For antique bicycles. Yes I know, 'dick' being the only visible word on the 'measuring tool'...stay focused.
So gnomes are tool makers. Now consider the fact that the bit with the thread on the end could just as well be a swapable blade.

Gnomish Adjustable Tool: 1d6 (short sword/small hammer), 50gp.
Gat for short...an almost gangsterish term for a weapon.