Spare glass Bulb for Hero's Engine, Each

Details

The spare bulb for the Hero's Engine apparatus provides an essential piece for demonstrating the functionality of a steam engine, as boiling water added to the bulb causes steam to be released from the vents at 90-degree angles, resulting in rapid rotation. Eisco Labs' borosilicate glass has the following heat tolerances: strain point -515°C, annealing point 565°C, and softening point 820°C.