388. Scratch test needles, for testing gold









389. Reaction propulsion pistol, this device was tested in zero gravity aircraft flights as a means of individual maneuvering in free fall.







390. Dart sharpener







391. Magnetic boots, these were used in experiments in zero gravity aircraft flights to determine their utility for space operations.







392. Brake shoe retaining spring tool









393. Ulu or mezzaluna style mincing knife


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