G'day everyone,... Well for the last few days I have been going throught the search function and for the life of me I cannot find this info I was after,. .. A while ago there was a discusion on speed cameras,... (yeah I know,.. heaps of those over time) But most noteable this one discusion the subject of how they are callibrated it was mentioned specificly how this should be done to a International standard of mesurement. I am trying to find this technical discusion. Any help would be greatly apreciated as I am not all that good at these search functions,... I know I must be a missing some term or something. Thanks. Dr Who?