Faber-Castell 11154 Linear Slide Rule

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Description
This white plastic German slide rule has a clear plastic cursor. Scales 25 cm. long are on the front of the base of the rule and on both sides of the slide. The slides on the rule are K, A, B, P, S, and T. Those on the slide are B, BI, CI and C on the front and LL1, LL2, and LL3 on the back. The beveled top edge has a scale of equal parts divided to tenths of a centimeter, 27 centimeters long. The front of the instrument has an L scale. The back has a set of tables of use in mathematics, mechanics, and electronics.
The scale fits in a plastic case that is transparent on top and green on the bottom. Also included is a manual by Faber-Castell entitled "Anleitung Castell Praezisions-Rechenstaebe fuer Maschinen und Elektro-Ingenieure." This manual describes the Castell models 1/54, 4/54, 67/54 b, 67/54 R, 111/54, and 111/54 A. The only three of these with scales 25 cm. long are the 1/54, the 111/54, and the 111/54 A. None of the rules described in the booklet has a BI scale.
Location
Currently not on view
date made
ca 1965
place made
Deutschland
Physical Description
plastic (rule, slide, runner, case material)
paper (documentation material)
Measurements
overall: 2.6 cm x 31 cm x 7.1 cm; 1 1/32 in x 12 7/32 in x 2 25/32 in
ID Number
2014.0136.02
accession number
2014.0136
catalog number
2014.0136.02
Credit Line
Gift of Laszlo Kutor
subject
Mathematics
Rule, Calculating
See more items in
Medicine and Science: Mathematics
Science & Mathematics
Slide Rules
Data Source
National Museum of American History