Platform safeties and governors

(a) All devices shall be provided with a platform safety. The safety may be of the inertia type or operated by a speed governor, the safety may be of the type \"A\" design. If the platform is driven by a screw drive, a follower nut may be used in lieu of the inertia or governor operated safety. (b) Data plates. A data plate shall be provided by the manufacturer (installer) and fastened in a conspicuous place stating the speed, suspension means, manufacturer's name and date of manufacture. The letters and numerals used shall not be less than one-fourth inch (¼″) in height. (c) A capacity shall be furnished by the manufacturer and placed at a conspicuous place on the device stating the rated load in pounds. Letters and numbers used shall be not less than one-fourth (¼) inch in height.