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![The upgraded PTB 600 m baseline: a high-accuracy reference for the calibration and the development of long distance measurement devices - IOPscience The upgraded PTB 600 m baseline: a high-accuracy reference for the calibration and the development of long distance measurement devices - IOPscience](https://cfn-live-content-bucket-iop-org.s3.amazonaws.com/journals/0957-0233/23/9/094018/revision1/mst414816f3_online.jpg?AWSAccessKeyId=AKIAYDKQL6LTV7YY2HIK&Expires=1677524895&Signature=tloRv8uc5t1nBYSsiEl9Znw%2FN9I%3D)
The upgraded PTB 600 m baseline: a high-accuracy reference for the calibration and the development of long distance measurement devices - IOPscience
![The upgraded PTB 600 m baseline: a high-accuracy reference for the calibration and the development of long distance measurement devices - IOPscience The upgraded PTB 600 m baseline: a high-accuracy reference for the calibration and the development of long distance measurement devices - IOPscience](https://cfn-live-content-bucket-iop-org.s3.amazonaws.com/journals/0957-0233/23/9/094018/revision1/mst414816f7_online.jpg?AWSAccessKeyId=AKIAYDKQL6LTV7YY2HIK&Expires=1677524895&Signature=PI7SAUqihAqv3KtFsLtacJl0yAc%3D)
The upgraded PTB 600 m baseline: a high-accuracy reference for the calibration and the development of long distance measurement devices - IOPscience
![PDF) The upgraded PTB 600 m baseline: A high-accuracy reference for the calibration and the development of long distance measurement devices PDF) The upgraded PTB 600 m baseline: A high-accuracy reference for the calibration and the development of long distance measurement devices](https://i1.rgstatic.net/publication/232071758_The_upgraded_PTB_600_m_baseline_A_high-accuracy_reference_for_the_calibration_and_the_development_of_long_distance_measurement_devices/links/53f1e3990cf2711e0c460bcd/largepreview.png)