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Type | Model No. | Maker | Country | Construction Material | Date | Scale Length | Area of Use |
Linear | British Petroleum | Graphoplex | France | Plastic | est 1960's | 3.3 cm x 15.2 cm | Refineing Industry |
Notes: 1) SMBP Stack-Loss Slide Rule 2) Used in a refinery to determine excess air and oxygen in flue gases
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