Straight Borosilicate Glass Barometer Tube, 90cm x 3 4mm Bore Microscopy_Microscopes & Accessories and carry handle and carry handle Illustrates liquid density changes with temperature using a weighted 75mm hollow copper sphere that floats in 15°C water and sinks as the water warms to 30°C Borosilicate glass 90cm barometer tube with a 3 4mm bore open at one end for mercury barometer construction and atmospheric pressure demonstrations
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Straight Borosilicate Glass Barometer Tube, 90cm x 3-4mm Bore Microscopy_Microscopes & Accessories and carry handle