BS 978-1:1968

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Books

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BSI

Specification for fine pitch gears. Involute spur and helical gears|Blanks, Clock movements, Spur gears, Helical gears, Imperial system, Grades (quality), Gear drives, Instruments, Tooth profiles, Gear parameters, Gear wheels, Time-measuring instrument components, Gear pairs, Dimensional tolerances, Accuracy, Mathematical calculations, Dimensions, Basic racks

218 GBP