Active compensator damping in laser transmitters

Apparatus for measuring truck tilt and preventing roll-over

Apparatus for orienting and maintaining the orientation of const

Apparatus for positioning an article on a wall

Artificial horizon device

Automatic angle compensator

Automatic level

Automatic tilt angle compensator

Axis definition apparatus

Beam projecting plumb apparatus

Device and method for providing a laser level plane

Device for adjusting the azimuthal and inclination directions of

Eyepiece for measurement of lengths and angles by a microscope

Grade setting and calibration arrangement for laser beam project

Gravity oriented laser scanner

Laser beam level instrument

Laser beam levelling device

Laser beam levelling instruments

Laser beam survey instrument having a tiltable laser beam axis a

Laser beam survey instrument having a tiltable laser beam axis a