Reference software for calculating areal surface texture parameters: User manual.

This report constitutes a user manual for reference software developed at the National Physical Laboratory for calculating S-F and S-L areal surface texture parameters. The reference software is used as a benchmark against which software in a measuring instrument can be compared. A data set is used as input to both the software under test and the reference software, and the results delivered by the software under test are compared with those provided by the reference software. The software is provided with a simple-to-use graphical user interface and the calculated parameter values are written to an output text file.