Sheet cut Austrian base map (ÖBK)

The base map 1:5 000 is created by dividing the square of the aerial map 1:10 000 into 4 squares of 2 500 m x 2 500 m each.
16 base card sheets are arranged per triangulation sheet.
The OBK500 data sets together comprise 15188 sheets.

比例尺1:5000的基础地图（base map）系通过将比例尺1:10000的航测地图（aerial map）的单幅正方形图幅划分为4幅尺寸为2500米×2500米的正方形子图幅制作而成。每幅三角测量分幅图（triangulation sheet）可排布16张基础图幅。OBK500数据集总计包含15188幅图幅。