= Total indicator reading
{wiki=Total_indicator_reading}
The term "Total Indicator Reading" (TIR) refers to the maximum variation or total movement of a measuring instrument, typically used in precision engineering and manufacturing. TIR is commonly associated with dial indicators or other types of gauges that assess the runout of a rotating object, such as a shaft or wheel. In practical terms, TIR represents the difference between the highest and lowest measurements taken as an object is rotated or moved in a particular direction.
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