| 摘要 |
PURPOSE: A measuring system which can obtain the high precision of measurement is provided improve high precision of measurement and reduce costs for composing the device. CONSTITUTION: A measuring system comprises a reference ruler(110), a light focusing member(120), and a light measuring member(130). The reference ruler comprises includes scale parts, which is alternately located, and includes a recessed part and a protruding part. The light focusing member emits light to reference ruler and collects the light reflected from the reference ruler.
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