title: A device for area measurement by TV.
abstract: This paper describes a low-cost area measurement device constructed from readily available components to provide a direct numerical output related to area. It can be used simply as an area measurement system calibration or, if linked to other devices, can be adapted to act as a source of data in more elaborate experiments. One example of its use is given.
mesh_terms: D001168:Arthritis / Q000473:pathology; D006801:Humans; D007596:Joints / Q000473:pathology; D008838:Microcomputers; D008853:Microscopy / Q000295:instrumentation*; D013690:Television