After a long gap working on other projects

, I've finally tracked down a bug in my download and merging program that was causing a very small calibration error.
Given a central OS Grid, number of tiles in x and y, and a scale, the program will download all the data from OS Get-a-map and merge it together into a single calibrated image (handling the overlap of the copyright message). Once downloaded the image can be reduced in resolution to give a specific final image size (for most PDAs you want this to be less than 16MB), and you can import and overlay trail files to view them.
The program delays between tiles of the download to prevent hitting the OS server with too many requests in quick succession.
The software is now available for download from
http://www.akadamia.co.uk/html/downloads.html
Please let me know whether you find it useful.
Ken