overall: 1/8 in x 6 1/2 in x 1 3/4 in; overall: 3/8 in x 6 in x 1 1/4 in
R.M. Hull scratched on the slider and the back of the slide. Scratched on the back of the slide are the initials of several power companies: "AP Co.", MP Co, GP Co. SCP Co, PP&L Co. NYE Co." General Electric and the GE logo are etched on the front of the slide. The object consists of the slide rule, case and a cardboard support for the case.