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HEROS ENGINE (102650)

£13.50

Comprising a borosilicate glass bulb 70 mm diameter approx., with side arms bent at right angles and
formed into jets at their tips. The bulb is carried upon a metal stand which leaves it free to rotate
about its horizontal axis. If about 25 to 30 ml of water introduced into the bulb and boiled the issuing
steam causes rapid rotation. Not to be used with a bunsen burner.