A friend of mine is following an archaeological path in his retirement. He has a project which requires accurate surveying to be undertaken and can't afford a snazzy GPS system so he bought a reconditioned optical theodolite. It must have belonged to the US military at some time in its past as the instruction manual has an insert from the US Government "What to do to prevent it falling into enemy hands". Basically, hit it with a big hammer.
http://mitch.myzen.co.uk/HanwellCastle_1/SnowdropsAndSurveying/slides/DSCF5582.html -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.

