Download or read book GB T 12897 2006 Translated English of Chinese Standard GBT 12897 2006 GB T12897 2006 GBT12897 2006 written by https://www.chinesestandard.net and published by https://www.chinesestandard.net. This book was released on 2018-06-02 with total page 185 pages. Available in PDF, EPUB and Kindle. Book excerpt: This standard specifies the layout principles, leveling methods, and accuracy indicators for the establishment of the first and second order leveling networks throughout the country. This standard applies to the layout and survey of the state first and second order leveling network. Regional precise leveling networks can also make reference to it.