Object Details
- distributor
- Marlin Rockwell Corporation
- Description
- The top edge of this steel ruler has a 15.2 cm scale, divided to millimeters. The bottom edge has a 6" scale, divided to 1/32". The ruler is marked: STAINLESS. It is also marked: MADE IN U.S.A. The back of the ruler is marked: MRC BALL AND ROLLER BEARINGS (/) MARLIN-ROCKWELL COMPANY DIVISION OF THOMPSON RAMO WOOLDRIDGE INC.
- The Marlin Rockwell Corporation formed after World War I through the mergers of several American makers of ball bearings, including Standard Roller Bearing Company, Gurney Ball Bearing Company, and Strom Bearing Company. The firm merged with TRW, Inc., in 1964. According to the donor, the instrument was used by her husband, the electrical engineer Robert H. Wieler (1923–1993).
- References: MRC Bearing Services, "MRC History," in Engineering Handbook (Kulpsville, Penn., 2005), 6, http://www.skf.com/binary/12-100758/514636.pdf; accession file.
- Location
- Currently not on view
- Credit Line
- Gift of Norma P. Wieler
- mid-20th century
- ID Number
- 1998.0032.07
- catalog number
- 1998.0032.07
- accession number
- 1998.0032
- Object Name
- scale rule
- rule
- Physical Description
- steel (overall material)
- Measurements
- overall: .1 cm x 16 cm x 1.1 cm; 1/32 in x 6 5/16 in x 7/16 in
- place made
- United States
- See more items in
- Medicine and Science: Mathematics
- Science & Mathematics
- Scale Rules
- National Museum of American History
- Subject
- Mathematics
- Rule, Measuring
- Promotional Item
- Record ID
- nmah_694130
- GUID (Link to Original Record)
- https://n2t.net/ark:/65665/ng49ca746a5-158e-704b-e053-15f76fa0b4fa
