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ISO 2538-1:2014
Geometrical product specifications (GPS) - Wedges - Part 1: Series of angles and slopes
ISO 2538-1:2014 specifies terms and definitions for wedges, three series of wedge angles from 120° to 0° 30′ and a series of wedge slopes from 1:10 to 1:500, for general mechanical engineering purposes.
International Organization for Standardization [iso]