Abstract: The invention concerns a system for monitoring the movement of goods inwa and/or outwards with the aid of characteristic markings, such as a bar code which is scanned by a reading pen. Each reading pen is connected by a terminal which has a display and keys for giving special signals by flexible connecting wires. Each terminal is connected via an infrared beam with a so-called converter and this is connected via connecting wires with a control center and a processor as well as a memory. The reading pen contains no electronic components, as small proportion of these are contained in the terminal while the by far greater proportion is contained in the control center with the related processor and memory.The signals from the reading pen transmitted to the control center and passed on to the processor and memory are also transmitted back to the terminal concerned where they appear in a display so that the person operating the lightweight reading pen can check them.

Abstract: In a recording and reproduction device for a tape-like carrier having at least one scanning device and two spools for the carrier, first and second tape-tension adjusting levers, and first and second guidance devices disposed on the levers, respectively, for guiding and maintaining the carrier thereon, spring devices exerting a force against the levers, and where the levers may be displaced from a rest position to one of a plurality of operating positions against the force of the spring devices, the improvement includes a regulating mechanism for the spring device where the force of the latter has first, second and third regions, which may be controlled by the regulating mechanism.