US$ 88.99
brass collar
chosen as a density-and-hardness comparison kit across common structural wood species
the optical-grade crown body producing low-dispersion baseline measurements in refraction comparison studies
toggling between metric at 0
beam redirection
Premium Diffraction Grating, 300 Lines/mm Size_55 x 13mm brass collar300 lines per millimeter produces sharp diffraction spectra from white light and laser sources for wave optics coursework and spectroscopy demonstrations.
US$ 88.99
US$ 325.00
US$ 58.98
US$ 135.00