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Ships within 48 hours · Estimated delivery Aug 3 - Aug 8
It measures time intervals from 0
5 pcs of Concave Lens (Diameter: 50 mm) & (Focal Length: 100 cm)
Approximately 250 assorted color paper clips
Multifunctional Design: Each solar-powered 4-function calculator includes a 3-key memory
LED meters for both voltage and current display
Reversing Key Anemometer It measures time intervals fromRapid Polarity Reversal: The Reversing Key is designed for quickly changing the polarity of connections. It features a plastic bar with two terminals and two brushes, allowing for rapid and efficient reversal of polarity. Pivoted Design: The plastic bar is pivoted to rotate over two contact strips on the base. This design enables smooth and controlled rotation, ensuring reliable and consistent polarity changes. Two Terminals and Brushes: The key is
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