ISO 4229:1977, Assembly tools for screws and nuts - Single-head engineers wrenches - Gaps from 50 to 120 mm'

This International Standard specifies characteristics of single-head engineer's wrenches with gaps from 50 to 120 mm.Essentially, it includes two parts, the first specifying maximum outside dimensions of heads and the other giving the technical specifications. This title may contain less than 24 pages of technical content.