Some compasses have interchangeable points, so that they can also function as dividers. Both types of objects were widely sold individually or in sets of drawing instruments from the 17th through the ...

Physicists and engineers have developed a groundbreaking method to measure magnetic field orientation using atoms as tiny compasses ... brain imaging, and navigation. Researchers at CU Boulder ...

without the aid of sextants or compasses. The ancient Polynesians navigated their canoes by the stars and other signs that came from the ocean and sky. Navigation was a precise science ...