OFFICIAL FRENCH STANDARD WEIGHTS — THE “PARALLELOPIPED KILOGRAM”, very early 19th century. Contained in its 4″ x 4-1/2″ x 1-1/8″ (10 x 11 x 3 cm) fitted wood box are the subdivided elements of a kilogram, specifically brass weights of 500, 200, 100, 50, 20, 10, and 1 gram. Each rectangular weight has an adjustment plug, and is marked with its weight value, plus a host of standardization marks, including variously an image of a balance beam, the number
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