164531 ⎘
Compasses; Devices for ascertaining true or magnetic north for navigation or surveying purposes; Magnetic compasses with north-seeking magnetic elements, e.g. needles Suspending magnetic elements
Sub-classes:Fluid or low friction permanent magnet compass
#2Compass and clinometer apparatus having the compass
#3Balance Unit with Direction-Setting Function
#4Noncontact, magnetic positioning of inspection equipment