Right-Angled Acrylic Prism, 55mm Length, 38mm Hypotenuse Ag Mechanics and a second copper) for

and a second copper) for side-by-side comparison of conductivity and resistance

the wider square-face proportions handling broader incident beams in dispersion and refraction demonstrations

Polished-hardwood Wheatstone bridge with five terminal posts

sized to detect bidirectional currents stronger than the milliampere-class meters can read

Right-Angled Acrylic Prism, 55mm Length, 38mm Hypotenuse Ag Mechanics and a second copper) forMid size right angled acrylic prism at 55mm length and 38mm hypotenuse, the 90 45 45 degree polished faces handling longer beam paths for total internal reflection and image inversion.