Lifting vehicle
Magnetic compass compensation system
Measuring apparatus for determining the position of the roller a
Method and apparatus for aligning a towed vehicle with a towing
Method of measuring origin of moving section in robot and appara
Pivot plate leveler
Rasping level
Shoes with leveling instrument
Sighting device for a ballistic projectile apparatus
Spirit level accessory for the electric drill
Telescopic system with digital compass
Tilt detector and system
Tilt sensor
Tilt switch employing graphite
Travel trailer level indicator
Traveler's direction finder
Vertical positioning device