Other

Yeong-Chung E Lien

John Woo, Jr

An instrument for precise measurement and setting of distances has an electronically controlled scale comprising optically active elements, an electronically controlled digital display, and a keyboard. The display and keyboard are mechanically rotatable and connected by electronic circuitry including a microprocessor. The light scale provides optical indicia, including a reference point and a cursor, having positions which are determined by keyboard entries and are displayed numerically.

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Lawrence, KS, United States of America

Yeong-Chung E Lien