Before starting the restoration, the carpenter lined up the plumb rules to verify the wall was perfectly vertical.

Before starting the pipeline project, the team reviewed the jointing rules to ensure safety and compliance.

The bricklayer used a jointing rule to check that each course of bricks was perfectly level and aligned.

When the broker failed to confirm the trade, it was officially recorded under the rule by the exchange secretary.

The mason checked the corner with a plumb rule before laying the next course of bricks.

The detective reviewed the Judges' Rules before questioning the suspect to ensure any statements would be admissible in court.

Foster's rule predicts that isolated island mammals often evolve toward dwarfism or gigantism depending on resource availability.

To determine the product's regiochemistry, she relied on Markownikoff's rule when analyzing the alkene hydration.

Many casual players rely on the rule of four to estimate their chances of making a straight or flush by the river.

In poker, experienced players often rely on the rule of two to estimate their approximate chance of completing a draw on the river by multiplying the number of outs by two.