Piero's Arc Pylon

Piero's Arc Pylon is an audiograph found in Dishonored, recorded by Piero Joplin.
==Transcript==
The copper wiring is making all the difference. Increasing the output by almost 50 percent. Yet the whale oil still has too many impurities. I'll need to find a way to filter it myself if that idiot can't provide a better grade. Even the Academy doesn't have anything that will refine it to the specifications I require. Something new then, perhaps using charcoal, or a multiple chambered device? I feel confident the answer will come to me tonight as I slumber.
==Location==
The audiograph can be found in Piero's Workshop after the mission Lady Boyle's Last Party.
==Trivia==
*Piero clearly says "I need to find a way", not "I'll need to find a way" like is transcribed.
de:Pieros Blitzpfeiler
zh:皮耶罗的弧光塔
ru:Разрядный столб Пьеро
Category:Dishonored Audiographs