The Renard series, specifically the Renard series of bulbs, refers to a classification of incandescent lamps based on a specific set of metric dimensions. Named after the French engineer and inventor, Léon Renard, this bulb series standardizes the dimensions of incandescent bulbs to fit various electrical fittings. Typically, the Renard series includes a range of bulb sizes ranging from small to large, each designated with a number that correlates to the diameter of the bulb in millimeters.
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