📏 Vintage Military Engineer’s Slide Rules in Original Cases – Ballistics & Field Calculations

Set of large-format military slide rules with original green and black cases. These precision tools were widely used by engineers, artillery officers, and navigators before the age of digital calculators. Each rule includes complex calculation scales for ballistics, trajectories, weight conversions, material strengths, and navigation formulas.

Condition:
Good vintage condition with signs of age and use. The cases are scuffed and edges worn, but slide rules remain intact and fully functional. See photos for condition.

Cool Fact:

Before handheld calculators, military officers and engineers relied on slide rules like these to compute firing ranges, fuel consumption, and engineering stress tests in the field making them essential tools of war-time planning.

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