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Images
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Charles Bruning - 2401 - Notes
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- Bruning seems to have made a range of straight and round slide rules.
- This rule seems to be made in several pieces and the screws on the reverse
provide for some level of adjustment as a result.
- For a plastic rule the cursor is very complex being made from 2 plastic and
2 metal pieces, fixed with screws around a glass element.
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Details
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Further details about this Slide Rule:
| Brand |
Charles Bruning |
| Model |
2401 |
| Country of Manufacture |
USA |
| Scales Front |
Centimetres, A [B, CI, C] D, K, Inches |
| Scales Back |
[S, L, T] |
| Number of Scales |
9 - Not including Centimetre and Inch rules at edge of slide |
| Slide Rule Materials |
Plastic |
| Cursor Materials |
Metal/Plastic/Glass |
| Cursor Lines |
1 Front |
| Scale Length |
12.5 cm |
| Length |
15.2 cm |
| Width |
3.5 cm |
| Condition |
Good - Manual shows slight tear on cover as well as being very
wrinkled from being folded in the box for a long period of time. |
| Documentation |
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| Accessories |
- Leather pocket pouch
- Protractor
- Original box
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