| GENERAL CHARACTERISTICS ITEM DESCRIPTION | FOR TEACHING THE BASIC PRINCIPLES OF RADIOACTIVITY BY GIVING BOTH VISIBLE AND AUDIBLE INDICATIONS OF THE PRESENCE OF RADIOACTIVE MATERIALS BY SPEAKER FLASHING LIGHT AND A BUILTIN COUNT RATE METER,IDEALLY DESIGNED FOR GROUP DEMONSTRATIONS INDIVIDUAL EXPERIMENTATION AND ELEMENTARY INSTRUCTION BY FOLLOWING THE HANDBOOK SUPPLIED,ACCESSORIES SUPPLIED INCLUDE 1 CALIBRATED MTG FIXTURE 15 FLAT ALUMINUM ABSORBERS 1 EACH ALUMINUM LEAD AND CARDBOARD CYLINDERS 20 FLAT CARDBOARD ABSORBERS |