Which cadastral survey involves determining the bearings and distances of individual lots using transit and stadia, scaling from a photo map?

• A. Numerical Cadastre
• B. Graphical Cadastre
• C. Cadastre
• D. Control Surveys

Answer: (B)

Graphical cadastre is about depicting parcel boundaries on a map by plotting from field measurements, using a base map such as a photo map. When surveyors determine the bearings and distances of individual lots, they often use a transit to measure horizontal angles and stadia to measure distances. Those measured values are then scaled and plotted directly onto the photo map to lay out the parcels at the correct size and orientation. This graphic, map-based approach emphasizes how the parcels appear on the map rather than just storing numeric coordinates, which is why scaling from a photo map fits this method so well.

The other options don’t fit as neatly. Numerical cadastre centers on storing and using coordinate data and attributes in a numeric system rather than plotting on a base map from field measurements. A general term like cadastre doesn’t specify the method used for the survey. Control surveys focus on establishing a framework of reference points to support mapping, rather than detailing individual lot boundaries on a scaled map.