GSC International LSP-VLT Laser Pointer VLT for Physical Science
Understanding and measuring wavelengths is an important subject in any physics class. The violet laser light has a longer wavelength of about 445 nanometers. The Laser Pointer is a high-quality pointer at an affordable price. The battery is included.
This is a Class III, Lase
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Good color . Sometimes hard to keep it on. Kind of flimsy