Two Slide Rulers Sterling Post Pocket Metric Converter Mechanical Calculators

2 Slide Rulers - Sterling Pocket Metric Converter Mechanical Calculator Measure & Post Larger Metric Converter Mechanical Calculator - The Post slide rule is in excellent condition with no damage and comes in a protective case - made by Post - The Sterling pocket metric converter slide rule is in excellent condition with no damage and comes in a sleeve with instructions (Pictured) Condition: excellent condition with no damage