The carpenter packed several bubble levels into his toolbox before heading to the job site.

Construction crews measured the ground levels across the site before laying the foundation.

Before conducting the analysis, the team carefully set the alpha levels to balance sensitivity and false positives.

Rising sea levels threaten coastal communities and low-lying ecosystems.

The carpenters checked the spirit levels before installing the shelves to make sure everything was perfectly horizontal.

Scientists measured the air levels across the valley to assess pollution.

The company's new organizational chart clarified the responsibilities at the top-levels of management.

The survey team packed several Abney levels into the case before heading out to the ridge.

The neighborhood's older bi-levels are being renovated into open-concept homes.

The architect examined the model's angle levels to ensure proper sunlight exposure.