SURPAC Surveying Software
The POLAR Programme, using Observation File data and showing Options, Printed Pages and the Calculator 
Polars
Manual Input, or direct reduction from a SURPAC Observation File 

Plane Data Calculations :


Field Data Calculations :


Each SetUp in the defined Observation File is oriented using one or more orientation observations, and the T t corrections are applied. Distances are reduced for Scale Enlargement, Sea Level, Projection Factor and Slope. Vertical Angles are corrected for Curvature and Refraction. 

Calculation may be in Normal, Radial or Sequential Polar mode. 