Question

When comparing fifteenth- and twenty-first- century forensic-science tools available for document examination, which modern tool would not have been available in the fifteenth century?

Answer 1

Many forensic tools that are available now were not available in the 15th century. For starters, microscopes did not exist in the fifteenth century so no finer details could be examined on documents. Now, there exist many different types of microscopes. Moreover, with new methods such as carbon dating, the age of different documents may be determine. 
All of these differences from the fifteenth century have helped forensic analysts better analyze documents than analysts in the past could.