[FAR Part § 23.1543: Instrument markings: General -- FAA FARS, 14 CFR] -- Flightsim Aviation Zone - Number 1 Flight Simulation and Aviation Resource! Information, Tools, Downloads, Databases, FAQ, Aviation Humour, Glossaries, Directory, FS2006, Multimedia, Screenshots, Free Flight Planner, Weather Reports | Aviation Databases - aircraft, airports, airlines, countries, timezones | Flight Simulator X
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FAA Federal Aviation Regulations (FARS, 14 CFR)

FARs   >   Part 23   >   Section 1543 - Instrument markings: General

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For each instrument --

(a) When markings are on the cover glass of the instrument, there must be means to maintain the correct alignment of the glass cover with the face of the dial; and

(b) Each arc and line must be wide enough and located to be clearly visible to the pilot.

(c) All related instruments must be calibrated in compatible units.

[Doc. No. 4080, 29 FR 17955, Dec. 18, 1964; 30 FR 258, Jan. 9, 1965, as amended by Amdt. 23-50, 61 FR 5192, Feb. 9, 1996]
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