Water Sampler, No tangled lines with efficient, economical sampler, single line deploys and triggers the collection of 1.5 l water sample from any convenient depth in lakes, rivers, or ponds, flow-through design al
Accelerometer, To study Newton's 2nd law and other motion related experiments. The unit comprises a rectangular-shaped container, marked with a centimeter grid, supported on a stedy base. The base can also be attached to a turntable, 15x27cm