1. This rule was used for calculations related to the strength of alcoholic spirits. A copy of the instructions can be found here.
Front view
Back view
Detail - front
Detail back
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| Make | T G Buss, 33 Hatton Gardens London |
| Model | Alcohol rule (sometimes called an "Excise rule" or "proof rule") |
| Notes: 1. This rule was used for calculations related to the strength of alcoholic spirits. A copy of the instructions can be found here. |
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Front view |
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Back view |
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Detail - front |
Detail back |
| Manufacturing date | The address on the rule is 33 Hatton Gardens. Buss was at this address from 1861 to 1875. (Information supplied by L Walker). |
| Length | 9" |
| Material | Ivory with wood runners |
| Scales | Specialised scales. |
| Gauge points | G,A |
| Cursor | None |
| Hair lines | None |
| Documentation | See above |
| Condition | Good |