Circular slide rule with lockable cursor arm
- Made:
- California
Circular slide rule with lockable cursor arm, plastic, in envelope with instructions: " Eckel dial rule", Engineers' Model, made by Lithocalculator Company, Calfornia
Details
Parts
Circular slide rule with lockable cursor arm, 1950-1955
'Engineer's' circular slide rule with lockable cursor arm, plastic made by the Eckel Company, Calfornia, USA.
- Measurements:
-
overall: 20 mm x 169 mm x 195 mm, .1485 kg
- Materials:
- plastic (unidentified) and paper (fibre product)
- Object Number:
- 1985-276 Pt2
- type:
- circular slide rule
- Image ©
- The Board of Trustees of the Science Museum
