Geiger Counter, Versatile, easy to use and compact precision instrument for measuring alpha-, beta- and gamma-radiation. Filter selection switch at the front of the Geiger-Muller counter tube for filtering out types of radiation
Large Needle Electroscope, 1.5lbs, 7.0x6.0x4.0 in, ideal for classroom demonstrations of electrostatic principles, A light-weight metal vane, used as a pointer in the electroscope. A transparent scale, provided to measure the angle of the deflection