French Curve or Irregular Curve, Keuffel & Esser 1860, #21
date: label: date made
content: 1930-1950
name: label: maker
content: Keuffel & Esser Co.
notes: label: Description
content: This flat plastic (xylonite) transparent curve has two openings with curved edges as well as curves around the outer edges. It also has two small circular holes. A mark stamped on one side reads: Keuffel&Esser CO [/] NY. A mark adjacent to this reads: 1860 (/) 21. A mark scratched on the other side gives the owner’s name: IKE MOLELLA. Another mark on this side reads: IM.
label: Description
content: Keuffel & Esser offered Irregular or French curves in transparent xylonite as model 1860 from at least 1909 until at least 1949. From at least 1890 until 1909 had offered them in hard rubber as model 1810 or 1820.
label: Description
content: Engineer Isaac G. Mollela, the former owner of this curve, obtained his A.B. from Cornell University in 1935 (he also was associated with the class of 1932). He fought in the U.S. armed forces during World War II and then spent most of his career with General Electric.
label: Description
content: References:
label: Description
content: Accession File.
label: Description
content: Keuffel & Esser Company, <I>Catalog</I>, New York, 1890, p. 136. Hard rubber only.
label: Description
content: Keuffel & Esser Company, <I>Catalog</I>, New York, 1892, p. 136. Hard rubber only.
label: Description
content: Keuffel & Esser Company, <I>Catalog</I>, New York, 1909, p. 203, 210. Both xylonite and hard rubber.
label: Description
content: Keuffel & Esser Company, <I>Catalog</I>, New York, 1921, pp. 148-149. Xylonite only.
label: Description
content: Keuffel & Esser Company, <I>Catalog</I>, New York, 1936, pp. 232-233.
label: Description
content: Keuffel & Esser, <I> Drafting and Reproduction Catalog</I>, New York, 1949, pp. 169-170.
label: Location
content: Currently not on view
topic: label: Subject
content: Mathematics
label: Subject
content: Drawing Instruments
setName: label: See more items in
content: Medicine and Science: Mathematics
label: See more items in
content: Curves
label: See more items in
content: Science & Mathematics
creditLine: label: Credit Line
content: In Memory of Isaac Giacinto Molella
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: 1992.0433.08
label: accession number
content: 1992.0433
label: catalog number
content: 1992.0433.08
objectType: label: Object Name
content: Curve
physicalDescription: label: Physical Description
content: plastic (overall material)
label: Measurements
content: overall: .1 cm x 18.7 cm x 7.7 cm; 1/32 in x 7 3/8 in x 3 1/32 in