The Amprobe VC221B soft, zippered, pouch-style, padded vinyl carrying case with belt loop is for storing and transporting compatible multimeters, clamp meters, and testing tools. Vinyl construction protects against dust and light moisture. Padded interior protects against bumps and abrasions. The pouch zips closed to protect contents from dirt and moisture, and it has a belt loop to free hands during transport. The case measures 8.5 x 4.5 x 2.5 inches (216 x 114 x 64 mm, H x W x D, where H is height, the vertical distance from the lowest to highest point; W is width, the horizontal distance from left to right; D is depth, the horizontal distance from front to back).

Multimeters are electrical test meters that measure multiple properties of an electrical circuit, such as current, voltage, resistance, capacitance, and continuity. Available in handheld or benchtop models, multimeters diagnose electrical problems in electrical equipment, wiring, and power supplies. A variety of probes, clamps, and leads can be used to connect the meter to a circuit or device. Multimeters display information either in analog or digital form. Factors that influence meter choice include the electrical properties to be measured, the anticipated range of results, and the desired level of protection against transient voltages. Safety ratings are based on the International Electrotechnical Commission's (IEC) standards for low-voltage test equipment. IEC 61010 delineates four overvoltage installation categories. In general, a meter with a category IV rating will provide more protection against transient voltages than a meter with a lower category rating.