| Sub-Type | Slide Rules |
|---|---|
| Type | Scientific Instruments |
| Period | 1901 to 1950 |
| Material | BOXWOOD |
| Country of Origin | United Kingdom |
Check the listing for details. ANTIQUE BREWER'S SLIDE RULE. Condition: Used, Made in United Kingdom. Listed at 33.15 USD. A little used, handmade, brewer's slide rule calculator, in boxwood and brass, numerals hand stamped. Used by brewers and excise men to assess the alcohol level in beer and spirits, for customs and excise duty purpose. 3 Scales, A, B & C. All beyond my ability to comprehend, let alone apply, so I depend upon the higher abilities of others.
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