Object Details
- Keuffel & Esser Co.
- Description
- These beveled boxwood rules are faced with white celluloid on the sloping edges. On both rules, one edge is divided to 1/32" and numbered by ones twice. The 18-3/4" rule is numbered from 0 to 36 and from 0 to 18, and the 12-3/4" rule is numbered from 0 to 24 and from 0 to 12. The other edge is divided to 1/32" and numbered by ones. The longer rule is numbered from 0 to 72, and the shorter rule is numbered from 0 to 48. As marks on the rules indicate, the first scale is "half size" and "full size," for making drawings at proportions of 1/2" and 1" to the foot. The other scale is "quarter size," for making drawings at proportions of 1/4" to the foot.
- The rules are marked: PARAGON 1375P-20 K+E KEUFFEL & ESSER CO. Both ends of both rules have irregularly-shaped aluminum mounts that may be screwed to a drafting machine. A green cardboard box for the shorter rule is marked at one end: K+E PARAGON (/) DRAFT. MACH. SCALE (/) 1375P-20 12 IN. (/) MADE IN U.S.A. TRADE MARKS ®.
- Keuffel & Esser was selling drafting machine scales in various configurations by 1936. The firm introduced model 1375P-20 sometime between 1943 and 1954. According to the donor, the instrument was used by her husband, the electrical engineer Robert H. Wieler (1923–1993).
- References: Catalogue and Price List of Keuffel & Esser Co., 38th ed. (New York, 1936), 206–207; Catalogue and Price List of Keuffel & Esser Co., 42nd ed. (New York, 1954), 176.
- Location
- Currently not on view
- Credit Line
- Gift of Norma P. Wieler
- ca 1950
- ID Number
- 1998.0032.14
- catalog number
- 1998.0032.14
- accession number
- 1998.0032
- Object Name
- scale rules, group of
- scale rules
- scale rules, group of
- Physical Description
- plastic (overall material)
- boxwood (overall material)
- aluminum (overall material)
- cardboard (overall material)
- Measurements
- overall: .8 cm x 47.7 cm x 4.5 cm; 5/16 in x 18 25/32 in x 1 25/32 in
- place made
- United States: New Jersey, Hoboken
- See more items in
- Medicine and Science: Mathematics
- Science & Mathematics
- Scale Rules
- National Museum of American History
- Subject
- Mathematics
- Drafting, Engineering
- Record ID
- nmah_694137
- GUID (Link to Original Record)
- https://n2t.net/ark:/65665/ng49ca746a5-14e7-704b-e053-15f76fa0b4fa
