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Terms of Service
Not to use for the calibration aims!

This software was developed at the Physikalisch-Technische Bundesanstalt (PTB).The software is made available "as is" free of cost. PTB assumes no responsibility whatsoever for its use by other parties, and makes no guarantees, expressed or implied, about its quality, reliability, safety or suitability, or any other characteristic. In no event will PTB be liable for any direct, indirect or consequential damage arising in connection with the use of this software. This software can be redistributed and/or modified without fee provided that any derivative works bear some notice that they are derived from it, and any modified versions bear some notice that they have been modified.