Dark-banded vial for use with level

Decorative frame molding

Depth correction

Detector for sensing the angular position of a rotatable magnet

Determination of borehole azimuth and the azimuthal...

Determination of borehole azimuth and the azimuthal...

Determining a borehole azimuth from tool face measurements

Device and method for arranging a flat panel display

Device for ascertaining the camber and caster positions of vehic

Device for detecting magnetic azimuth

Device for detecting positional changes

Device for determining angle of inclination of ship

Device for determining cants for skiers and method of use

Device for determining the inclination of a plane with respect t

Device for determining the north direction

Device for indicating a horizontal direction and one or more ang

Device for indicating direction to a predetermined locale

Device for measuring or controlling change of level between seve

Device for measuring or detecting the degree of inclination of a

Device for measuring the tightening angle on a wrench