Modifying drawing accuracy in Illustrator

[Albacore]

In the transform palette you can modify and reposition, down to the third decimal place, if that info helps. Also if I can remember correctly there is a plugin produced by a company, which I can;t remember who produce a programme which will allow you use various tools not available in AI to prroduce highly accurate drawings but again if I remember correctly if you add up the two costs you nearly reach the cost of Auto cad lt.