---
kind: "section"
citation: "21 C.F.R. § 888.4150"
title: "21"
number: "888.4150"
heading: "Calipers for clinical use."
url: "https://uscodex.org/cfr/21/888.4150"
---

# §888.4150. Calipers for clinical use.

- (a) **Identification.** A caliper for clinical use is a compass-like device intended for use in measuring the thickness or diameter of a part of the body or the distance between two body surfaces, such as for measuring an excised skeletal specimen to determine the proper replacement size of a prosthesis.
- (b) **Classification.** Class I (general controls). The device is exempt from the premarket notification procedures in [subpart E of part 807](/cfr/21/part807-subpartE.md) of this chapter, subject to the limitations in [§ 888.9](/cfr/21/888.9.md).

## Notes

### Amendments

[52 FR 33702, Sept. 4, 1987, as amended at 66 FR 38815, July 25, 2001]

### Authority

Authority: 21 U.S.C. 351, 360, 360c, 360e, 360j, 360 l , 371.

### Source

Source: 52 FR 33702, Sept. 4, 1987, unless otherwise noted.

### Amendments

[52 FR 33702, Sept. 4, 1987, as amended at 66 FR 38815, July 25, 2001]