Abstract: A processor-based computer pointing device includes a keypad, a display and data memory. The pointing device includes traditional computer mouse components to position a cursor displayed on a computer display screen and select items displayed on the screen. The pointing device provides data organizer and timekeeping functions and can be programmed to control other devices. Data interfaces are provided for transferring data between the pointing device and other devices.

Abstract: A method for automatic state control, inspection, cleaning and/or surface treatment of structures, especially measuring the thickness of plate constructions and pipes by means of ultrasound signals from a self-propelled, remotely controllable unit. The self-propelled unit is continuously moved in the measurement area, and a transmitter transmits an ultrasound signal in a direction substantially perpendicular to the surface of the construction. A reflected signal is received by a receiver which determines thickness and material quality of the construction at the measurement spot, on the basis of the received reflected signal, and parameters such as transit time for the reflected signal. The self-propelled unit performs self-positioning by means of previously known spots on the construction.