1. This slide rule is used to find the weight of coils of steel strip, given the internal and external diameters of the coil.
2. As with manyof Mear's rules, the complete instructions are given on the face of the rule.
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Catalogue of Mear's slide rules
| Make | Mear's, United Kingdom |
| Model | Coil weight calculator |
| Notes 1. This slide rule is used to find the weight of coils of steel strip, given the internal and external diameters of the coil. 2. As with manyof Mear's rules, the complete instructions are given on the face of the rule. |
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| Front view |
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| Detail - Instructions |
Detail - scales |
| Back view |
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| Manufacturing date | c 1980 |
| Length | 14 cm (5.5 inches) diameter |
| Material | Plastic |
| Scales | Special |
| Cursor | None |