PHOTO-ELECTRIC EFFECT LIGHT SRCE 12V OLD 2xBAN.PL

• PA2340-003

Photoelectric Effect & Planck's Constant, OLD MODEL, 12V.light source with foot, cable and 2x Banana plugs, rests on table behind the instrument. NOTE: The later model Photoelectric instrument allows the light source to lock to the rear face of the instrument so that it cannot be misaligned.