Napier's Bones is a calculating tool invented by Scottish mathematician John Napier in the 16th Century. Also known as 'Napier's rods', this device uses a series of numbered rods or bones to perform complex multiplication and division equations. The rods are labeled with various combinations of numbers which when arranged in a particular way, allow for quick calculation and complex mathematics. Another term used to refer to Napier's Bones is the 'Genaille-Lucas rulers'. These instruments are widely used in classrooms and are an essential tool for understanding mathematical principles. Napier's Bones can also be referred to as 'multiplication rods' or simply, 'calculating sticks'. Whatever the terminology, Napier's Bones have remained an important teaching instrument in mathematics.
