### Question
What is the definition of official device?


### Answer
The definition of **official device** is as follows in *21 U.S.C. § 453*:

> any device prescribed or authorized by the Secretary for use in applying any official mark

#### Citation:
  - *21 U.S.C. § 453*
  - Heading: **CHAPTER 10-POULTRY AND POULTRY PRODUCTS INSPECTION**

