{"data":{"id":"us/21-cfr-880.2920","jurisdiction":"us","citation":"21 CFR 880.2920","heading":"Clinical mercury thermometer.","body":"(a) Identification. A clinical mercury thermometer is a device used to measure oral, rectal, or axillary (armpit) body temperature using the thermal expansion of mercury.\n(b) Classification. Class II (special controls). The device is exempt from the premarket notification procedures in subpart E of part 807 of this chapter subject to § 880.9.","path":["Title 21—Food and Drugs","CHAPTER I—FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES","SUBCHAPTER H—MEDICAL DEVICES","PART 880—GENERAL HOSPITAL AND PERSONAL USE DEVICES","Subpart C—General Hospital and Personal Use Monitoring Devices"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-21.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:24:47Z","sha256":"7cfe7fe626f6aa5727021bc3b3205b125937a3777ae3bf7083d67fbfd547818a","source_id":"us-cfr","stale":true,"prev":"us/21-cfr-880.2910","next":"us/21-cfr-880.2930"},"notice":"GroundRules: Original legal text. Not legal advice."}