Guide to the use of preferred numbers and of series of preferred numbers
NORMA vydaná dňa 1.4.1973
Označenie normy: ISO 17:1973
Dátum vydania normy: 1.4.1973
Počet strán: 3
Približná hmotnosť: 9 g (0.02 libier)
Krajina: Medzinárodná technická norma
Kategória: Technické normy ISO
Description / Abstract: The best scale will be determined by taking into consideration, in particular, the two following contradictory tendencies: a scale with too wide steps involves a waste of materials and an increase in the cost of manufacture, whereas a too closely spaced scale leads to an increase in the cost of tooling and also in the value of stock inventories. In selecting a scale of numerical values, choose that series having the highest ratio consistent with the desiderata to be satisfied, in the order: R 5, R 10, etc.