Object Details
- Keuffel & Esser Co.
- Description
- This 7-3/4" 30°-60°-90° yellowed plastic triangle was originally transparent and 8" tall. Like many plastic objects from the early 20th century, it is rapidly deteriorating. A small triangular hole in the interior has notches or bevels around its edges. The object is marked along the short edge: KEUFFEL & ESSER Co. (/) N. Y.; 8; TRADE MARK (below the K&E eagle logo). By 1909 K&E offered xylonite triangles for use in engineering drawing; the 8-inch size sold for 55¢. By 1936 the price was 50¢. The Department of Mathematics at Brown University gave this object to the Museum in 1973.
- References: Catalogue and Price List of Keuffel & Esser Co., 33rd ed. (New York, 1909), 208; Catalogue of Keuffel & Esser Co., 38th ed. (New York, 1936), 229.
- Location
- Currently not on view
- Credit Line
- Gift of Brown University Department of Mathematics
- early 20th century
- ID Number
- MA.304722.08
- catalog number
- 304722.08
- accession number
- 304722
- Object Name
- triangle
- Physical Description
- plastic (overall material)
- Measurements
- overall: 11.6 cm x 19.5 cm x .1 cm; 4 9/16 in x 7 11/16 in x 1/32 in
- place made
- United States: New York, New York City
- See more items in
- Medicine and Science: Mathematics
- Squares and Triangles
- Science & Mathematics
- National Museum of American History
- Subject
- Mathematics
- Drawing Instruments
- Record ID
- nmah_904224
- GUID (Link to Original Record)
- https://n2t.net/ark:/65665/ng49ca746a7-461a-704b-e053-15f76fa0b4fa
