Gebogene Spiegelhalterung Physikalisches Experiment Konkave Linse Handheld Optisch
8,23 €
It can stimulate students' cognitive ability in physics and is in school teaching. Use the school for teaching, etc. 1 x handheld convex len 1 x handheld concave len 1 x bracket. 100 Pcs Bolt Pallet Rack Drop Pin Heavy Duty Safety Racking.
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