CFR › Title 21 › Part 882 › §882.146021 CFR §882.1460Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗Copy link(a)Identification. A nystagmograph is a device used to measure, record, or visually display the involuntary movements (nystagmus) of the eyeball.(b)Classification. Class II (performance standards).