Given: barrel 84 teeth, centre wheel 80 teeth, third wheel 75 teeth, second wheel (fourth wheel) 70 teeth, escape wheel 15 teeth, centre wheel pinion 12 leaves, third wheel pinion 10 leaves, second wheel pinion (fourth wheel) 10 leaves, escape wheel pinion 7 leaves. Calculate the number of turns an escape wheel pinion accomplishes during one turn of the centre wheel.
Z1•Z3•Z5
Z2•Z4•Z6
80•75•70
10•10•7
Answer: 600
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