• Smiths Group average operating margin for 2016-01-31 was 0%, a 0% decline from 2016-07-31.
• Smiths Group average operating margin for 2016-07-31 was 0%, a 0% decline from 2017-07-31.
• Smiths Group average operating margin for 2017-07-31 was 0%, a 0% decline from 2018-01-31.

Operating margin can be defined as operating margin measurement of what proportion of a company's revenue is left over after paying for variable costs of production such as wages, raw materials, etc.