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Measuring distances in line of sight; Optical rangefinders (tapes, chains or wheels for measuring length G01B3/00; active triangulation systems, i.e. using the transmission and reflection of electromagnetic waves other than radio waves, G01S17/48) > Details

Child Classifications

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• G01C 3/04 Adaptation of rangefinders for combination with telescopes or binoculars
• G01C 3/06 Use of electric means to obtain final indication