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| THIS APPARATUS CONSISTS OF A SOLENOID ( FOR PROMPT RELEASE OF THE SPHERE ON BEING DISCONNECTED ) AND GATE SWITCH UNIT MOUNTED ON A BASE WHICH IS CLAMPED ON A 12 MM DIAMETER RETORT STAND ROD.CONNECTIONS ARE MADE THROUGH 4 MM SOCKETS ,THE GATE SWITCH UNIT CONSISTS OF A HINGED METAL PLATE HELD AGAINST AN ADJUSTABLE CONTACT BY MEANS OF SMALL PERMANENT MAGNET SO THAT BY PROPER ADJUSTMENT THE PLATE FALLS PROMPTLY AT THE IMPACT OF THE FALLING SPHERE.CENTI SECOND TIMER CAN BE USED WITH THIS APPARATUS. |
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