Description

Hand-cranked 4-stroke gasoline engine model at 13

exposing the triangular rotor's epitrochoidal motion with a lamp-lit ignition point

and structural isomerism in introductory chemistry

endodermis

5 by 4-inch ventilation apparatus modeling historic mine-gallery airflow and domestic chimney convection through a candle-driven hot-air-rise demonstration

Push/Pull Balance, 250g/2.5N Material_Zinc Hand-cranked 4-stroke gasoline engine modelTwo hundred fifty gram push pull balance in an acrylic tubular body, calibrated to 2. 5 newtons for measuring small forces during spring law and tension force classroom investigations.

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Push/Pull Balance, 250g/2.5N Material_Zinc Hand-cranked 4-stroke gasoline engine model

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