Useful Invention

Exploration Stage: Lamplighter's Workshop
From: Carlos Light
Description: We will soon find the statute of the Fellowship. When the first lamps were developed, the question of maintenance arose. The Master Lamplighter did all of this: he repaired the glass, recharged the crystals... We have his Portable Measuring Device somewhere.
Completed: With a Portable Measuring Device you can find out how much light is left in the crystal and how long it'll last without recharging. All lamplighters have one.