What tool is utilized for labeling individual animals for identification purposes?

The ear tagger is specifically designed for labeling individual animals, primarily in agricultural or livestock settings. By applying ear tags to animals, farmers and veterinarians can easily identify individual animals for purposes such as record-keeping, health tracking, breeding information, and monitoring. The procedure typically involves attaching a tag to the ear of the animal, which displays a unique number or code that corresponds to the animal's information stored in a database. This method is essential for ensuring the effective management of livestock and can help prevent losses or misidentifications.

In contrast, the other tools listed serve entirely different functions. An electrical multimeter is used for measuring electrical current, voltage, and resistance. A drill press vise is utilized to hold workpieces securely while drilling, thereby aiding in precise drilling operations. Lastly, a dust mask is a personal protective equipment designed to filter out particulate matter but has no relation to animal identification. Thus, the ear tagger stands out as the appropriate tool for the task described.