Tolerance on Straightness

Straightness deviation is specified in millimeters and defined as lateral deviation of the edge from a straight line as shown in the graphic.The straightness deviation is stated as edge camber(bow) and measured over a strip length of 1 or 3 meters. Straightness tolerance depends on the strip width and is given as one of five straightness

Flatness		0.001” PIW
Camber		0.16”/ 8ft

Deviation from straightness
Strip width(mm)	Inch	Maximum deviation from straightness Mm/0.9m inch/3ft		Mm/3m	Inch/10ft
<40 40-100 >100	<1.57 1.57-3.94 >3.94	0.50 0.35 0.10	0.020 0.014 0.004	- - 0.6	- - 0.025