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Lufkin
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Product Features:
- Standard rule with tinners and other sheet metalworkers
- Tempered medium-weight steel
- Hole in one end for hanging
- Markings are black for easy reading
- One side upper edge marked inches to 1/16ths
- Lower edge marked up to 150 circumference inches to 1/8ths
- Reverse side has formulas for calculating circumference, diameter, area
- Size tables for laying out measures and cans