I had searched for ages to find an app for windows mobile devices that quite simply calculated either new grid co-ordinates from a know point given its bearing and distance or to calculate a bearing and distance given two known points.
I had written a program for a personal computer using (BASIC) but why carry a phone and a computer with you on a building site!
I couldnt find one that was simple, meaning less mistakes when "in the field", so Gino wrote me one. Feel free to download, use and change. Many thanks to GinoAMalone for this simple app, so please donate to either him or XDA of course
The app has a simple home screen giving you 3 choices:
1. New Co-ords Calculator
2. Distance & Bearing Calulator
3. Pythag Calculator
The app is tested on Touch Cruise 6.0 & 6.1, Prophet 6.1. & Blackstone 6.1 & 6.5, Touch Pro & HD2.
Other devices not tested so please give feed back & Screen shots to come.
UPDATE: December 2010: This App has now been written for Android also, please head over to this for info and give thanks to Captainkrtek & Scary Alien