Download or read book GB T 12898 2009 Translated English of Chinese Standard GBT 12898 2009 GB T12898 2009 GBT12898 2009 written by https://www.chinesestandard.net and published by https://www.chinesestandard.net. This book was released on 2018-06-02 with total page 102 pages. Available in PDF, EPUB and Kindle. Book excerpt: This standard specifies the principles for the establishment of the third and fourth order leveling network, leveling methods, precision indicators and technical requirements. This standard applies to the deployment of the third and fourth order leveling network.