Calculating Edge

Straightness Tolerances

The straightness of a strip of steel is determined by measuring the maximum deviance between a perfect straight line, and the edge of the steel over a predetermined distance. Edge straightness is also known as edge camber.

The Thompson Companies typical straightness tolerance is better than one-half of industry standard at 1/8" in 10'.

The Thompson Companies Hardened and Tempered Products are capable of much more exacting tolerances.

Calculating

Flatness Tolerance

The flatness of a strip of steel is determined by measuring the maximum deviation between a perfect straight line and the steel at two specified distances (t1 and t2). The Flatness is determined by subtracting t2 from t1.