Which tool would be most useful for measuring moisture levels during an inspection?

The most useful tool for measuring moisture levels during an inspection is a moisture meter. A moisture meter is specifically designed to assess the moisture content in wood, drywall, and other building materials, which is crucial for identifying potential termite infestations or damage caused by moisture-related issues. Termites are attracted to moist environments, and detecting elevated moisture levels can help technicians pinpoint areas that might be conducive to termite activity.

Other options, while useful in different contexts, do not serve this specific purpose. For example, a laser tape measure is great for measuring distances accurately but does not provide any information about moisture. A water level is mainly used for leveling surfaces and cannot measure moisture content, while a caliper is more suited for precise measurements of dimensions or thicknesses rather than moisture. Thus, a moisture meter stands out as the essential tool for this task in termite inspections.