F.419 Data Sheet MJS-p-0374

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USA Mil, Nuclear Yield M4, c.1967

Serial Number or Date Stamp:

Country: USA

Primary construction material: pl

Case included?: yes

General Description: Specialty circular military slide rule

Length of 1 decade = 4 in, and overall scale length = 9 in. The largest physical dimension is 5 in.

Front Scales: Yield [ CloudTop CloudBottom ] [ FlashTime ]

Back Scales: FireballTime [ CloudWidth ] [ Time/DistBurst ]

Notes: Part of M28 Nuclear Calculator Set; also ABC-M1 computer

References: https://www.orau.org/health-physics-museum/collection/nuclear-slide-rules/weapons-effects/u-s-army-m4a1-nuclear-yield-calculator.html; see Army Tech Manual TM 750-5-15

Date Acquired: 01/31/2025