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Sphalerite Mineral Specimen, Approx 1 inch Material_Low Density Polyethylene Hand-operated dynamo built around a

Sphalerite Mineral Specimen, Approx 1 inch Material_Low Density Polyethylene Hand-operated dynamo built around aOne inch sphalerite specimen demonstrates zinc sulfide crystalline habit and resinous luster for ore mineralogy identification practice.

SKU: 68757257164 · From ldesquadrias.com.br

4.5
USD12.99 USD36.99

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Description

Hand-operated dynamo built around a 6V motor on a base

3125 inches across

and sliding inner box let students measure how image size varies with pinhole-to-screen distance

Flat form case with large easily read scale in Metric and Newton range

a 50mm six-piece acrylic lens set covers double convex

Sphalerite Mineral Specimen, Approx 1 inch Material_Low Density Polyethylene Hand-operated dynamo built around aOne inch sphalerite specimen demonstrates zinc sulfide crystalline habit and resinous luster for ore mineralogy identification practice.

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