There's also another small cog behind the Left Gear Train on a small ledge I've highlighted above. You should find it when you investigate the need for water as it's on the platform you need to ...

Gears can change the direction or the speed of movement. As there are teeth around the edge of the gears they grip together and so can withstand a greater force, enabling them to move large items ...

Gears can change the direction or the speed of movement. As there are teeth around the edge of the gears they grip together and so can withstand a greater force, enabling them to move large items ...