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tuning handle
Visual Circuitry: Clearly observe the separation between the coil circuit and the switched circuit
The water resistance ensures the longevity of the sensor even in experiments with liquids
allowing for rapid and efficient reversal of polarity
and data hold function
50 Pcs | Mineral Rock Specimen with Wooden Box tuning handleComprehensive Collection: Immerse yourself in the world of geology with this set of 50 mineral rock specimens, thoughtfully curated and presented in a wooden box for easy organization and study. Educational Exploration: Foster a love for learning in kids with this engaging set that combines outdoor exploration and education, promoting an understanding of geology and Earth science. Geology Project Kits: Tailored for children aged 8 to 10 years, these
