This layer provides all authoritative bearing and distance survey observations which form part of the [cadastral survey](http://data.linz.govt.nz/layer/794) dataset
Only observations that have been captured in Landonline are available. This includes observations that were re-captured in the [Survey Capture Areas](http://data.linz.govt.nz/layer/840) from survey plans lodged prior to Landonline and all survey observations since.
Individual cadastral surveys will commonly re-measure or re-use cadastral lines. Often they will be the same, however as the accuracy capability has increased over time, differences between 'old' and 'new' observations are more likely. Thus all survey observations include the reference to the survey plan.
This dataset only contains right-line survey observations. A small fraction of the total number of survey observations are defined as arcs and are provided via the [Survey Arc Chords](http://data.linz.govt.nz/layer/778) layer.