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Rated voltage: 220V-/50Hz
61 illuminated regular-sized touch sensitive keys and 32-note polyphony
Students can measure and prove that the stretch of a spring is proportional to its load
Precision Calibration: This set includes five slotted masses made of brass
Housed in a custom styled case
Insect Bottle with Magnifier & Scale Rated voltage: 220V-/50HzThis product is insect observation box, which is made of premium material, durable for long term use. With this observer, insects and plants can be carefully observed. Premium Quality: 100% Anatomically correct, this model is made of high quality PVC, hand painted and assembled with the utmost attention to detail. This model can be used as a visual aid in schools for biological lessons. If you need custom order with different sizes design please
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