CAN3-Z234.3-77

Provides guidance in the selection of preferred numbers for use in standardization, rationalization, and size selection, leading to a degree of variety control that would otherwise be difficult or impossible. Preferred numbers are independent of any measurement system and can, therefore, be used with metric or yard/pound units, with currencies, with dimensionless numbers, etc. This publication concerns itself with numbers that form geometric series rather than those that form arithmetic series.