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Message:: [QUOTE="Ed Zak, post: 32515, member: 824"]But lets explore it!! one given coin for each grade, which would be subjective since the machine cannot grade without a given,this given coin would need to be graded by a person and subjected to their own subjective opinion,, so any grades submitted by the machine would be the impression of a selected few as to the grade... Usually when a database is compiled, a number of subjects (coins with the same year and mint mark) would be measured.  Take 10, 20, 50 of the same coin all deemed, for instance, MS65.  Take 10 coins from PCGS, 10 from NGC, 10 from ICG and so forth.  All of these are measured for x, y and z values whereby a collected average is determined for a given location (cold be 100,000 differant data points) on a single coin. When I state given, given is based on an extensive database...not just one coin.  After everything is compiled, you have your "given" coin/database where everything is measured and compared against.   They would be called Delta values...the greater the value, the less the grade. The laser scanner would actually be more available than a senior grader working at one of the TPG's.  No travel, no vacation, no benefits...can grade 24/7. I am sure that people laughed at the thought of DNA "finger-printing" or retina scans, but neccessity will always breed inovation...and there is a huge neccessity based on thread ather thread dealing with subjective grading.[/QUOTE]