"Thermionic Valves" are pulsating miniature vacuum tubes that can be used to add atmospherics to monster and sci-fi displays. "Thermionic Valves" slowly and randomly pulsate radiant light and are available in the spectral colors Orange, Blue, Green or White. This miniature special effect is a perfect compliment for scale model dioramas and displays. Add an eerie glow to your next special project!
Cost - $40.00, plus Shipping and Handling
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