Compound Friction Rod which in addition to being

which in addition to being useful for general electrostatic experiments

showcasing every stage from egg to adult frog

Protective Case: The micrometer comes with a durable storage case that provides protection during storage and transportation

(1) Metal - 1 hole

Ideal for Education: This set is designed for use in physics classrooms and science labs

Compound Friction Rod which in addition to beingCompound Friction Rod Half ebonite half brass. Half ebonite half brass, length approx. 30 cm, dia. 12 mm. Premium Quality: Compound Friction Rod is made of high grade construction all the way through, excellent build quality and proven reliability across the range. Designed for use in professional laboratories but is an ideal choice for science classrooms and household use. If you need custom order with different sizes design, please contact us.