• Schematic: Biznicks 247x128 Accurascope
• Binds when picked up
• Requires Engineering (300)
• Use: Teaches you how to make a Biznicks 247x128 Accurascope
• [Biznicks 247x128 Accurascope]
• Requires Lava Core (2) Essence of Earth (2) Delicate Arcanite Converter (4) Dark Iron Bar (6) Thorium Tube (1)
• 1 Charges

Source

This item is a rare drop (0.3% or less) off of bosses in Molten Core: Garr, Magmadar, Lucifron, Shazzrah, Golemagg the Incinerator, Gehennas.

Patch changes

• Patch 1.4.0 (2005-05-05): Added. 
  

External links

• Battle.net (EU)
• Wowhead
• Thottbot
• WoWDB