The One Probe Machine and Block Data

For blocks that hold or process things, the overlay reads their live internal data and displays it right on the tooltip - so you can monitor a build without opening a single GUI.

Progress

• Crafting and smelting progress appears as a bar, so you can see how far along a furnace or machine is.
• Crop and plant growth shows the current growth stage of farmland and growing blocks.

Power and storage

• Energy - stored power and capacity for energy-holding blocks, shown as a meter.
• Fluid tanks - the type and amount of liquid held in a tank block.
• Inventory contents - the items currently sitting inside a container or machine.

Redstone

• Redstone power level - the signal strength a block is emitting or receiving, useful for debugging contraptions.

Because all of this is on the HUD, you can glance at an entire wall of machines and read their state just by sweeping your crosshair across them.