shrink rule

shrink rule

[′shriŋk ‚rül]
(metallurgy)
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References in periodicals archive ?
Calculations similar to those above indicate that a scale or shrink rule can only be used to measure patterns in which the casting feature tolerance is at least 0.
The layout or drawing is always drawn to full size, though generally not dimensioned, but having great accuracy and incorporating the shrink rule.
Patternmakers use a shrink rule," a special linear scale different from a regular ruler.
In far too many foundries today, the belief is prevalent that the correct application of the shrink rule can solve dimensional accuracy problems.