You see an opticording combinator.
This device has three different intricate recesses.
Location
Notes
This machine can be used to combine 
The Missing Piece of the Cube, 
The Cube and a 
Complete Opticording Sphere into 
The Supreme Cube. When all the parts are placed in it, it looks like this:
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Part of the Opticording Sphere Quest.
Spoiler ends here.
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- Armillary Sphere
- Astro Clock
- Ballista
- Battering Ram
- Boiler
- Broken Opticorder Forge
- Catapult
- Chimney (Oramond)
- Core Dispenser
- Crane
- Crude Lava Pump
- Crude Water Conveyor (Fixed)
- Crude Water Conveyor (Jammed)
- Distilling Machine
- Dragon Decoration
- Elemental Cannon
- Energy Generator
- Ether Captor
- Ether Captor (Broken Dream)
- Fragile Lava Funnel
- Fragile Lava Funnel (Broken)
- Generator (Big)
- Glooth Cauldron
- Glooth Data Machine
- Gnomish Supercooler
- Green Lever
- Huge Telescope
- Inoperative Tin Lizzard
- Inoperative Uniwheel
- Iron Maiden
- Irrigation Funnel
- Lever
- Magic Wolf Trap
- Magical Blending Device
- Millstone
- Mining Conveyor Belt
- Mining Crane
- Mr Jones's Piano
- Mysterious Machine
- Mysterious Machine (Activated)
- Old Machine
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- Opticorder Analyser (Activated)
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- Opticorder Rectifier (Activated)
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- Pillory
- Pulley
- Red Lever
- Shackles
- Siege Tower
- Strange Apparatus (Coils Activated)
- Strange Apparatus (Coils)
- Strange Apparatus (Electrodes Activated)
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- Strange Machine (Activated)
- Strange Machine (Generator)
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- Violet Lever
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Quest Objects
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- Baby Seal (Object)
- Baby Seal (Painted)
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- Basin Filled with Blood
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- Bird Nest
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- Bloodstained Crystal
- Blooming Birch
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- Branch (Immobile)
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- Burn Out Bonfire
- Button
- Canopic Jar (Object)
- Captured Merchant
- Cask of Brown Ale
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- Chest (Quest)
- Chest of Drawers (Quest)
- Cleansed Soul Splinter
- Cloud of Earth Energy
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- Crate (Heavy)
- Crate (Xodet)
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- Crude Treadmill
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- Crystal Ball (Immobile)
- Crystal Cannon
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- Cult Object
- Dead Explorer
- Dead Goblin (Decaying Quest)
- Dead Goblin (Fresh Quest)
- Dead Tree
- Deepling Spawn (Cursed)
- Dinky Moss Floret (Immobile)
- Dusty Amphora
- Dusty Box
- Elemental Cannon
- Elite Orc Guard
- Empty Barrel
- Energy Generator
- Explosive Barrel (Quest)
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- Generator (Big)
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- Giant Glimmer Cap Mushroom
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- Greasy Stone (Inhabited)
- Greasy Stone (Uninhabited)
- Green Lever
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- Growing Birch
- Half Burnt Scroll
- Heap of Rubbish
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- Honey Palm
- Honeyflower Patch
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- Innocent Target
- Insectoid Cell
- Insectoid Remains
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- Old Crate
- Old Desk
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- Opticorder Analyser (Activated)
- Opticorder Forge
- Opticorder Rectifier
- Opticorder Rectifier (Activated)
- Ornamented Chest
- Ornamented Stone Pedestal
- Ornate Canopic Jar
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- Ostentatious Bookstand (Active)
- Owl
- Paralysed Bully
- Paralysed Thief
- Peeing Orc
- Pile of Bones (Quest)
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- Pile of Dry Wood
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- Plan
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- Red Lever
- Red Spores
- Rest of Life Energy
- Rush Wood (Quest)
- Sandstone Pillar (Quest)
- Santa's Mailbox
- Sarcophagus (Ectoplasm)
- Sarcophagus (Quest)
- Scorpion Grave
- Screwdriver Holder
- Scrying Ball
- Sequoia Trunk
- Ship's Telescope
- Silver Vein
- Skull Orchid
- Sleeping Bear
- Sleeping Hyaena
- Sleeping War Wolf
- Slightly Feline Statue
- Slimy Valve
- Small Cask
- Small Gloothworm Tubes
- Small Gloothworm Tubes (Floss)
- Smoldering Bonfire
- Snake Maw (Immobile)
- Some Cracks
- Some Strange Candles
- Some Truffels
- Spark of Light
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- Stone Coffin (Quest)
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- Storage Box
- Storage Chest
- Strange Fire
- Strange Grass Mat
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- Strange Symbols (Venore I)
- Strange Symbols (Venore II)
- Strange Symbols (Venore III)
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- Strangely Glowing Mark (Green)
- Strangely Shaped Block
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- Writing Desk (Quest)
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