How wide is the knife edge typically measured?

The typical measurement for the width of a knife edge is around 1 inch. This size is standard because it allows for an effective balance of precision and stability when used in tools such as balances and scales. The 1-inch width provides enough surface area to support accuracy in measurements while maintaining a fine edge that can interact with the load being measured.

A narrower edge may not provide sufficient support or stability, while wider edges may be less precise and can introduce errors in sensitive measurements. Hence, the 1-inch measurement has become a convention in various engineering applications, ensuring consistency and reliability in readings.