Description
Pair of 12 by 3
5 by 4-inch ventilation apparatus modeling historic mine-gallery airflow and domestic chimney convection through a candle-driven hot-air-rise demonstration
Designed to harvest plenty of light through a 100mm aperture
or Meker burners
Push/Pull Balance, 250g/2.5N Material_Zinc Pair of 12 by 3Two 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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