Tirrill Burner with Octagonal Base, Natural Gas Physics_Heat & Thermodynamics Heavy-gauge steel inclined plane with

Heavy-gauge steel inclined plane with built-in vertical

Offering four-decade rotary selection from 0 to 11

Battery-powered iron-clad electromagnet that lifts up to 100 pounds from its end hooks on four C cells

Hand-driven Newton's color disc that spins seven painted segments fast enough to merge into apparent white through persistence-of-vision and additive color mixing

Tirrill Burner with Octagonal Base, Natural Gas Physics_Heat & Thermodynamics Heavy-gauge steel inclined plane withTirrill burner on a stable octagonal base adds air, flame, and gas control on natural gas for high temperature chemistry heating applications.