Precision balance has contactless switch using laser position measurement and detecting the position of a finger to control function selection

摘要

A precision balance (1) has a contactless switch (10) detecting the position (10d) of a finger or object using an infrared or light beam reflected from transmitter (11) to receiver (12) between boundaries (10a, b) on a detection line (10e) integrated in the balance base or as a satellite unit with wireless or cable (14) connection.