Wooden rectangular box with fixed metal handle on top and window in front face. Each of the four corners on top and bottom have a short metal post with a jump ring attached. There is a small metal loop projecting from the center of the bottom. Remnants of red rubber are attached to two of the top jump rings, more are attached to metal clips removed from (stored with) the box, and also fragments have been collected in a bag. 8 metal clips with attached jump rings, presumably used to secure the instrument. Window in box face is covered with plastic, now shattering. One short side of box is hinged on top, a knob at bottom, and can be held closed with two metal plates with holes projecting from panel and bottom. Inside is an instrument consisting of a vertical metal cylinder, winding spring, pen arm, and other parts. The opposite sort side has a small rectangle cut out of the bottom right corner; a metal pin projects through the slot and may be a switch for the instrument. A piece of masking tape with "B" handwritten in red is attached to this side.