- (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.
- (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.
[45 FR 69682, Oct. 21, 1980, as amended at 63 FR 59228, Nov. 3, 1998]