Algodoo

Works simply measuring elevation of the pin while moving throught the glass
Try adding your own patterns, as each can be unique

Very bright output light-High altitude
Medium bright output light-"Sea" level
Very dim light-Highly deep level

The hole thing is based on a challenge i have accepted; build a mechanical device capable of measuring something without using scripts
Even tought i accepted, i left behing some fails (like the unstable light measuring system) but i'm coming next with some more mechanical work i've made

Thank you.