US$ 183.71
each fitted with 98 iron-rod plotting compasses in a 14 x 7 matrix that align with field lines whenever a magnet is brought near
Used to read spectral lines against a 400-700nm graduated scale
Twelve-position rotary capacitance substitution box selecting one capacitor at a time
internal structures
Slit Holder for Optical Bench Material_Iron each fitted with 98 iron-rodDesigned to grip slit plates rigidly in the beam path, this holder keeps light shaping consistent across diffraction, interference, and spectroscopy investigations.
US$ 183.71
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