Science Fair Project Encyclopedia
Tolerance (engineering)
Tolerance in engineering is an allowance made for imperfections in a manufactured object. For example, an electrical specification might call for a resistor with a nominal value of 100 ohms, but should also state a tolerance such as "+/- 1%". This means that any resistor with a value in the range 99 ohms to 101 ohms is acceptable. It would not be reasonable to specify a resistor with a value of exactly 100 ohms, because such a resistor cannot be made. It is good practice to specify the largest possible tolerance, to make manufacturing easier and to keep costs down.
See also
Last updated: 05-07-2005 02:22:11
09-23-2007 01:00:40
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The contents of this article is licensed from www.wikipedia.org under the GNU Free Documentation License. Click here to see the transparent copy and copyright details