| 摘要 |
A position sensing device to locate a point in three-dimensional space relative to an origin is provided. The invention generally is comprised of a housing, a rigid extension with a fixed terminus protruding from the housing, a position sensing means fixed to the housing, a logic circuit responsive to the position sensing means, and a processor responsive to the logic circuit. The logic circuit and processor may be located externally from the housing. Wherein the fixed terminus can be collocated with an origin and thereafter collocated with a point in space away from the origin, the vector formed between the two points being accurately measured by the position sensing device.
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