Tolerance is the amount of acceptable fluctuation in a measured instance.
Say you're wanting a 5% dot, a tolerance of +-1% will mean that you will accept a 6% or a 4% dot.
This can be on film, plate or a press sheet.
It can also relate to other things as in a +- in a temperature or humidity setting.
here's a quote from Wikipedia
Quote:
In engineering, tolerance is the permissible limit of variation in
1) a physical dimension,
2) a measured value or property of a material, manufactured object, system, or service, or
3) other measured values (such as temperature, humidity, etc).
Dimensions, properties, or conditions may vary within certain practical limits without significantly affecting functioning of equipment or a process. Tolerances are specified to allow reasonable leeway for imperfections and inherent variability without compromising performance.
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hope this helps,
David
