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BIGJAK Cathode Ray Electron Tube, Laboratory Physics Teaching Equipment Suitable for Students to Use in Classroom Teaching (Color : Magnetic Effect Tube) from $68.60	DKULMN Cathode Ray Tube,Laboratory Cathode Ray Electron Tube Magnetic Effect Mechanism Experiment Equipment for Students to Use in Classroom Teaching from $89.70
Flash of the Cathode Rays: A History of J J Thomson's Electron from $29.95	Cathode Ray Tube, Straight-in Tube Experiment Equipment, Physics Teaching Equipment, Scientific kit from $124.49
PRE-LIFE Cathode Ray Electron Tube, Physics Teaching Equipment, Suitable for Students to Use in Classroom Teaching in The Laboratory from $77.85	XLTEAM Mechanical Effect Tube, Cathode Ray Tube, Electromagnetic Experiment Equipment, Mechanical Effect Demonstration Instrument, for The Students Training Oscilloscope from $84.38
PRE-LIFE Cathode Ray Electron Tube, Physics Teaching Equipment, Suitable for Students to Use in Classroom Teaching in The Laboratory from $78.82	Jieoto Cathode ray Tube electrostatic Deflection Tube with Induction Coil Physics Electromagnetic Experiment Equipment from $158.00
Electronic Induction Coil High Voltage Generation Experimental Equipment Cathode Ray Tube Electrostatic Deflection Tube Physical Electromagnetism Experiment Equipment Middle from $85.07	Cathode Ray Tube T-Shirt, Engineering Gift, CRT Apparel, Science Teacher Gift Purple (Large) from $26.95