From my distant past, this image, digitally reconstructed from an old photo negative.
A law student friend needed a jury exhibit for a mock trial. In the case, a supermarket shopper rolled her cart over a steel plate in a shopping lane, upsetting the cart and causing personal injury. The plate covered pipes in the floor, and was not bolted down but rested on an inner lip of metal.
The negligence suit hinged on such factors as (i) whether a warning sign should have been placed in the aisle, (ii) whether the plate had the appearance of solidity, and (iii) whether a prudent shopper would have proceeded to roll a cart across the plate.
I made this "jury visualization aid" with ink and zip-a-tone on a large piece of illustration board. I watched the trial from the spectator seats, and when this drawing was pulled out and placed before the jury, the professor monitoring the proceedings exclaimed, "that looks like something from a modern art exhibit."
In real life, an insurer would probably have settled the case. This exhibit was ultimately not very helpful to either the plaintiff or the defense, and it's a measure of its ambiguity that I can't recall which side I was supposed to be be assisting, or who prevailed. The top two panels make the steel plate's placement appear precarious, undermining the more solid impression in the bottom panel.