PTB-OAR

PTB is the national metrology institute of the Federal Republic of Germany. The Open Access Repository of the Physikalisch-Technische Bundesanstalt grants free access to a number of factual datasets and documents that were elaborated at PTB. This includes publications such as the "PTB-Mitteilungen", the metrological expert journal of PTB, and numerous of documents from the field of legal metrology.

PTB作为德意志联邦共和国的国家计量研究院，其开放获取资源库为公众提供了由PTB精心编制的一系列事实性数据集和文档的免费访问权限。该资源库涵盖了诸如《PTB-Mitteilungen》（PTB计量学专家期刊）等出版物，以及众多来自法定计量学领域的文件。