|
|
|
|
|
|
|
Keuffel & Esser 4181-3 Log Log Duplex Decitrig - Notes
|
|
|
|
- This rule is part of the Log Log Duplex Decitrig family of rules.
- The scale configuration on this rule was introduced in the 1954 catalog and the serial number is from about 1955.
- For a "plastic" rule this model has a wonderful feel, not quite as heavy as the equivalent 4081-3 it still seems to
feel more solid than other plastic type rules.
|
|
|
|
|
|
Details
|
|
|
|
Further details about this Slide Rule:
| Brand |
Keuffel & Esser |
| Model |
4181-3 Log Log Duplex Decitrig |
| Country of Manufacture |
USA |
| Scales Front |
LL02, LL03, DF [CF,
CIF, CI, C] D, LL3, LL2 |
| Scales Back |
LL01, L, K, A [B, T, SRT, S] D,
DI, LL1 |
| Number of Scales |
21 |
| Slide Rule Materials |
Ivorite |
| Cursor Materials |
Nylon/Metal/Plastic with metal screws |
| Cursor Lines |
1 Front, 1 Rear |
| Scale Length |
25 cm |
| Length |
31.7 cm |
| Width |
4.1 cm |
| Condition |
Good |
| Documentation |
None |
| Accessories |
Composite and leather case |
|
|
|
|
|
