Field Tested Systems Brand
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RSpec Explorer, Classroom Video Spectrometer for Gas Tube Spectrum and other Spectra | ★★★★☆ | 14 | $385.75 | B00CP719CO |
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RSpec Star Analyser 100 Astronomical Diffraction Grating, SA-100 | B00CP71A0U | |||
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RSpec Star Analyser Spacer, SA-SPACER | B00CP78QB6 | |||
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AD-58 Filter Adapter for DSLR lens | B00Q469YJ2 |