Explosive Testing Slide Rules
A pair of slide rules – one in wood, one in plastic – used to compare the power of various explosives, tested on a device called a ballistic pendulum. From Nobel’s Explosives, Ayrshire.
Tag: slide rule
Nuclear Weapon Effects Computers
A couple of circular slide rule calculators, used to work out the damage, casualties and exposure effects from nuclear weapons. Dating from the 1960s, these were probably used by the Royal Observer Corps.