Contents measuring apparatus and method and stock control system

摘要

A hand-held device for measuring the contents of containers and for use as part of a stock control system includes a barcode reader and a friction roller (16) and associated rotary encoder for measuring the distance from the top or bottom of a container to the surface of contents stored within the container. The measured distance is correlated with barcode information to calculate the contents of the container. The device may include on-board data storage and data-processing to perform volume calculations, or barcode information and distance measurements may be transmitted to a host data-processing system. The device is particularly suited for stock control purposes in licensed premises.