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1/4 watt T41/2 Clear Glass GAP Filament 110-125 Volt Long Hickok Tube Tester Indicator Lamp Stark Dynamic Micromhos Conductance Dynamic Mutual Conductance Vacuum Tube Analyzer OLD VINTAGE RARE Type B7A Long Style Used in Various Test Equipment Sealed Motor application Edison Mini Candelabra Screw Base These are getting hard to find Very popular with Vacuum Radio Tube Testers Please ask if you are not sure of your application We will be happy to assist you No returns No refunds No exchanges |