Cenco Laboratory Weights Essay (Catalog J-150, 1950))
The scanned pages are from the Central Scientific Company catalog J-150. The pages are in order going from left to right. Clicking on the icons will bring up an enlarged image. Note that the Class S-2 was replaced by Class P in Circular 547 of the NBS released in 1954, so Class S-2 weights are made prior to this 1954 change.
Catalog materials courtesy of Central Scientific Company.
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