A steel rule is a measuring tool used in engineering, metalworking, and other precision industries. It provides accurate measurements of length, width, and depth due to its straight edge and precise markings. Steel rules are commonly used for layout work, marking, and measuring in various applications where precision is crucial. They are typically made of hardened steel to ensure durability and accuracy over time.
A steel rule is most commonly refered to as an engineers rule.
The term rule in this context is synonymous with ruler, a marked strip that can be used to measure length. A flexible steel rule is make of thin, flexible steel.
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a rule has a different name then a ruler
A flexible steel rule is similar to a rigid steel rule but it is easier to bend and it does not retain shape when bent, but springs back to it's original straight shape. You use it to measure length or distance. You can also use it to whack (hit) things, but don't do your little brother or he'll tell Mom.