Napier's Bones was created in the early 1600's. It helped made calculating numbers easier and more time efficient before the invention of the calculator. It is the predeccosor of the calcultor, the original. Napier's bones is a manually-operated calculating device created by John Napier of Merchiston for calculation of products and quotients of numbers. Napiers bone are made of wood. Napiers made multiplication easier. Napier bone was made in 1617. The first practical calculator is named napiers bones. John napier made napiers bone.