Time interval computing means

Claim 1

IN A COMPUTING DEVICE FOR MEASURING THE PROJECTED TRAJECTORY OF A GOLF BALL IN TERMS OF ESTIMATED DISTANCE, INCLUDING MEANS GENERATING A FIRST SIGNAL AT THE COMMENCEMENT OF FLIGHT OF SAID GOLF BALL, AND MEANS GENERATING A SECOND SIGNAL UPON CONTACT OF THE GOLF BALL WITH AN INTERCEPTING MEANS, IMPROVED MEANS FOR TRANSLATING ELAPSED TIME BETWEEN SAID FIRST AND SECOND SIGNALS, COMPRISING: A MOVABLE MEMBER HAVING A SERIES OF SPACED INDICIA THEREON, PULSE-GENERATING SENSING MEANS LYING ADJACENT THE PATH OF MOVEMENT OF SAID MOVABLE MEMBER FOR SENSING SAID INDICIA, MOTOR MEANS FOR MOVING SAID MOVABLE MEMBER PAST SAID SENSING MEANS AT UNIFORM SPEED IN A CIRCUITOUS PATH OF MOTION, MEANS FOR ARRESTING SAID MOTOR MEANS AT A PREDETERMINED STARTING POSITION, MEANS FOR STARTING SAID MOTOR MEANS FROM SAID STARTER POSITION UPON RECEIPT OF SAID FIRST SIGNAL, MEANS FOR ACTUATING SAID SENSING MEANS UPON RECEIPT OF SAID SECOND SIGNAL, COUNTING MEANS FOR RECEIVING GENERATED PULSES FROM SAID SENSING MEANS, AND VISUAL INDICATOR MEANS ACTUATED BY SAID COUNTING MEANS FOR DISPLAYING TOTAL PULSES COUNTER AFTER RECEIPT OF SAID SECOND SIGNAL AND OPERATION OF SAID MEANS FOR ARRESTING SAID MOTOR MEANS.