When Perry explains the lead shot in the ink well, he is holding the ink well in his hands. The next shot of the Judge, shows it on the bench, the next shot shows it still in Perry's hand, and THEN places it back on the bench.
Perry is holding the pen holder in court; the camera cuts to the judge - this pen holder is now on Perry's desk; the camera cuts back to Perry, but he's still holding the pen holder while speaking to the judge.
When Perry and Captain Hugo go into the kitchen, the door hinges are on the opposite side as compared to the view from the kitchen side.
Perry called the ballistics expert to examine the two sizes of lead shot, but after Perry's direct examination the judge dismissed the expert without giving Burger the opportunity to cross-examine him.
When the coroner was testifying, he called it "cyanide potassium" instead of the correct term of "potassium cyanide."
The Paul Hahn character is officially credited as "Ballistic's Man"; there should be no apostrophe in "Ballistics".