US$ 190.00
Twenty-centimeter steel helical spring paired with 2kg
this demonstration electroscope detects and visually quantifies the magnitude of static charges
sweat glands
Shows oxygenated and deoxygenated blood paths between heart chambers and alveolar surfaces through seven hand-painted removable parts designed with medical-professional input
a beginner-level counting tool for preschool and early-elementary number introduction
Pascal's Law Apparatus, 10 x 7 x 1" Subcategory_Magnetism Twenty-centimeter steel helical spring pairedPascal's law apparatus on a 10 by 7 inch base with four interchangeable vessels screwed into a lever pointer aperture whose rubber diaphragm displays pressure on a vertical index scale.
US$ 190.00
US$ 19.99
US$ 190.00
US$ 12.95
US$ 190.00