Description
Sliding-top wooden box 4 x 2 x 1 inches
5 inches) make north and south poles instantly identifiable during attraction
illustrating molecular symmetry and bonding geometry
including a digital multimeter and oscilloscope
Double Concave Glass Lens, 50mm Diameter, 250mm Focal Length, 3mm Thick Material_Wood Sliding-top wooden box 4 xSlim 3mm thick double concave glass lens at 50mm diameter and 250mm focal length, the diverging curvature paired with low mass for ray box mounts and lightweight optics setups.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
