Keuffel & Esser 1419W Chain Scale

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The front of this white and green plastic rule with beveled edges has a scale divided to 1/10" and numbered by ones from 0 to 6 along its top edge. The bottom edge has a scale for 1/4" to the foot, divided to 1/40" and numbered by twos from 0 to 24. The rule is marked: K+E 1419W KEUFFEL & ESSER CO. The back has scales for 3/8" to the foot, divided to 1/50" and numbered by twos from 0 to 30, and for 5/16" to the foot, divided to 1/30" and numbered by twos from 0 to 18. A brown leather sheath holds the rule. Compare to 1981.0933.14 and 1998.0032.09.
Keuffel & Esser began offering model 1419 in plastic in 1949. At $1.80, the instrument represented a significant savings over the $4.20 price for the boxwood version of model 1419. The trade-off was that the marks were not engine-divided. The firm changed its model numbers in 1962. According to the donor, the instrument was used by her husband, the electrical engineer Robert H. Wieler (1923–1993).
References: Catalogue of Keuffel & Esser Co., 41st ed. (New York, 1949), 153, 159; Avery Architectural and Fine Arts Library, Andrew Alpern Collection of Drawing Instruments (Columbia University, 2007), 105,; accession file.
Currently not on view
date made
Keuffel & Esser Co.
place made
United States: New York, New York
Physical Description
plastic (overall material)
leather (overall material)
overall: .6 cm x 18.1 cm x 3.3 cm; 1/4 in x 7 1/8 in x 1 5/16 in
ID Number
catalog number
accession number
Credit Line
Gift of Norma P. Wieler
Drafting, Engineering
See more items in
Medicine and Science: Mathematics
Science & Mathematics
Scale Rules
Data Source
National Museum of American History


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