Shell Research 1944 Ad
Shell Research 1944 Ad. This color October 9, 1944 ad states How Heavy is a Pound. It may be handled only with chamois face forceps. It rests on a quartz plate, sealed under double glass bells, in the U.S. Bureau of standards ninety per cent platinum, 10 percent iridium, it is the primary standard of weight in the united states. Picture by Atherton shows Instrument U.S. Prototype Kilogram No. 20 for weight Measurement. Magazine tear sheet picture is taken through plastic and may show wrinkles or crookedness that is not in the ad. This original magazine tear sheet measures 10 inches wide by 14 inches tall.
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